GCSE Mathematics




 ESSENTIAL REVISION
                 QUESTIONS

                   MathsWatch
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CONTENTS
Grades
C/D......................................... 3 to 40

B............................................. 41 to 54

A/A* ...................................... 55 to 71
85 Essential Questions at C to D
                              (1 to 72 are non-calculator)

    1T) a)    4t + 7t                 Grade C                            a)   11t
        b)    4t × 7t                                                    b)   28t2
        c)    6y + 2w – 5y            Clip 102                           c)   y + 2w
        d)    6y × 3t                                                    d)   18yt or 18ty
        e)    4e2 × 3e3                                                  e)   12e5
        f)    m7 ÷ m5                                                    f)   m2
              y5                                                         g)   y3
         g)   y2                                                         h)   3y3

              6y 4
         h)   2y


    1S) a)    3t + 8t                                                   a)    11t
        b)    2t × 9t                                                   b)    18t2
        c)    12y + 3w – 5y                                             c)    7y + 3w
        d)    4y × 2t                                                   d)    8yt or 8ty
        e)    3e5 × 2e7                                                 e)    6e12
        f)    x4 ÷ x3                                                   f)    x
              r7                                                        g)    r4
         g)                                                             h)    3r2
              r3
              6r 5
         h)
              2r 3



     2T) a)    Expand 5(3y – 1)                                          a)   15y – 5
         b)    Expand 3x(2x + 4)                                         b)   6x2 + 12x
         c)    Expand and simplify 2(3x + 5) – 3(4x – 2)                 c)   –6x + 16
         d)    Expand and simplify 5(2y – 3) + 2(y – 1)                  d)   12y – 17
         e)    (2x + 3)(x – 4)                                           e)   2x2 – 5x – 12
                                        Grade C
     2S) a)    Expand 3(2y – 4)         Clip 103                         a)   6y – 12
         b)    Expand 5x(3x + 2)                                         b)   15x2 + 10x
         c)    Expand and simplify 5(2x + 1) – 2(3x – 4)                 c)   4x + 13
         d)    Expand and simplify 4(3y – 2) + 2(3y – 2)                 d)   18y – 12
         e)    (3x – 4)(2x – 1)                                          e)   6x2 – 11x + 4


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3T) Find the nth term of the following patterns
        a) 3, 5, 7, 9, 11 . . . . .                                         a) 2n + 1
                                                 Grade C
          b) 8, 13, 18, 23, 28, . . . . .        Clip 112                   b) 5n + 3

          c)   9, 6, 3, 0, –3, . . . . .                                    c)   –3n + 12


    3S) Find the nth term of the following patterns
        a) 2, 6, 10, 14, 18 . . . . .                                       a) 4n – 2

          b) 7, 16, 25, 34, 43, . . . . .                                   b) 9n – 2

          c)   5, 2, –1, –4, –7, . . . . .                                  c)   –3n + 8



    4T)
                 Number of
                                     Frequency
                  smarties

                      29                     2
                      30                     5
                      31                     2
                      32                     1

          a)   From the table above, find the mean number of                a)   30.2
               smarties in a tube.
                                                                            b)   30
          b)   Find the median number of smarties in a tube.

                   Grade C Clip 133
    4S)
                 Number of
                                     Frequency
                  smarties

                      29                     2
                      30                     1
                      31                     5
                      32                     2

          a)   From the table above, find the mean number of                a)   30.7
               smarties in a tube.                                          b)   31
          b)   Find the median number of smarties in a tube.
Page 4           ©MathsWatch       www.mathswatch.com    mathswatch@aol.co.uk           Page 4
5T) Factorise the following:
          a)   2x + 6                                                                   a)   2(x + 3)
          b)   2x + 8                                                                   b)   2(x + 4)
          c)   2x + 12
                                            Grade C                                     c)   2(x + 6)
          d)   3x + 6                       Clip 104                                    d)   3(x + 2)
          e)   x2 + x                                                                   e)   x(x + 1)
          f)   2x2 – 6x
                                                                                        f)   2x(x – 3)
                                                                                        g)   3h(3h + 2)
          g)   9h2 + 6h
                                                                                        h)   2x(4x – 5)
          h)   8x2 – 10x


    5S) Factorise the following:
          a)   2t + 10                                                                  a)   2(t + 5)
          b)   3m – 12                                                                  b)   3(m – 4)
          c)   4y + 8                                                                   c)   4(y + 2)
          d)   2x2 + 6                                                                  d)   2(x2 + 3)
          e)   t2 + t                                                                   e)   t(t + 1)
          f)   5t2 + 10t
                                                                                        f)   5t(t + 2)
          g)   7t2 – 14t
                                                                                        g)   7t(t – 2)
          h)   9h2 – 30h
                                                                                        h)   3h(3h – 10)




    6T) a)     If a piece of wood is measured as 8cm to the                             a)   Greatest is 8.5cm
               nearest cm, what is the greatest possible                                     Least is 7.5cm
               length and the least possible length?

                                                                                        b)   Greatest is 19.85cm
          b)   If a piece of wood is measured as 19.8cm to the
               nearest tenth of a cm, what is the greatest possible                          Least is 19.75cm
               length and the least possible length?

                             Grade C
                             Clip 125
    6S) a)     If a piece of wood is measured as 5cm to the                             a)   Greatest is 5.5cm
               nearest cm, what is the greatest possible
                                                                                             Least is 4.5cm
               length and the least possible length?

          b)   If a piece of wood is measured as 6.7cm to the                           b)   Greatest is 6.75cm
               nearest tenth of a cm, what is the greatest possible                          Least is 6.65cm
               length and the least possible length?




Page 5           ©MathsWatch          www.mathswatch.com              mathswatch@aol.co.uk          Page 5
7T) a)     If a = 3 and t = –2 find the value of
               (i) 3a                                                          a)   (i) 9
               (ii) a2                     Grade D                                  (ii) 9
               (iii) 5a2                                                            (iii) 45
               (iv) 4a – 2t                Clip 66                                  (iv) 16
               (v) 2(3a + t)                                                        (v) 14
                                                                                    (vi) 2
               (vi) 4a − t
                      7
          b)   Colin said “when x = 3, then the value of 4x2 is 144”           b)   Sue because
                                                                                    4x2 is 4 × x2
               Sue said “when x = 3, then the value of 4x2 is 36”
               Who was right? Explain why.




    7S)        a) If a = 4 and t = –5 find the value of
                                                                               a)   (i) 12
               (i) 3a
                                                                                    (ii) 16
               (ii) a2
                                                                                    (iii) 80
               (iii) 5a2
                                                                                    (iv) 26
               (iv) 4a – 2t
                                                                                    (v) 14
               (v) 2(3a + t)
                                                                                    (vi) 3
               (vi) 4a − t
                      7
          b)   Colin said “when x = 5, then the value of 4x2 is 400”           b)   Sue because
               Sue said “when x = 5, then the value of 4x2 is 100”                  4x2 is 4 × x2
               Who was right? Explain why




    8T) a)     Write 2340000 in standard form.                                 a) 2.34 × 106
        b)     Write 0.00042 in standard form.                                 b) 4.2 × 10–4
        c)     Write 7.8 × 106 as a normal number.                             c) 7800000
        d)     Write 4.71 × 10–5 as a normal number.                           d) 0.0000471

                Grade C Clip 97
    8S) a)     Write 630000000 in standard form.                               a) 6.3 × 108
        b)     Write 0.00000715 in standard form.                              b) 7.15 × 10–6
        c)     Write 9.17 × 105 as a normal number.                            c) 917000
        d)     Write 8.23 × 10–6 as a normal number.                           d) 0.00000823

Page 6           ©MathsWatch        www.mathswatch.com      mathswatch@aol.co.uk           Page 6
9T) Write the following numbers as the product of their
        prime factors
        a) 48
                               Grade C                                      a) 2 × 2 × 2 × 2 × 3
        b) 60               Clips 95 & 96                                   b) 2 × 2 × 3 × 5
        c) Find the Highest Common Factor of 48 and 60                      c) 12
        d) Find the Lowest Common Multiple of 48 and 60                     d) 240
    9S) Write the following numbers as the product of their
        prime factors
        a) 90                                                               a) 2 × 3 × 3 × 5
        b) 120                                                              b) 2 × 2 × 2 × 3 × 5
        c) Find the Highest Common Factor of 90 and 120                     c) 30
        d) Find the Lowest Common Multiple of 90 and 120                    d) 360


   10T) a)    Draw an angle of 70 degrees and then use ruler          Grade C Clip 127
              and compasses to bisect it.
         b)   Draw a line of length 9cm and then bisect it            Grade C Clip 129
              using compasses.
         c)   Use compasses to draw a triangle ABC with AB            Grade D Clip 80
              equal to 9cm, AC 7cm and BC 4cm

   10S) a)    Draw an angle of 60 degrees and then use ruler
              and compasses to bisect it.
         b)   Draw a line of length 11cm and then bisect it
              using compasses.
         c)   Use compasses to draw an isosceles triangle with
              the base equal to 8cm and the other two sides of
              length 12cm


   11T) What is 2 × 5 + 7 × 3?                  Grade D                   31

                                                Clip 59
   11S) Work out the answer to 38 – 3 × 4                                 26


   12T) What is 2.3 × 0.15?                                            0.345
                                     Grade D
   12S) What is 2.7 × 0.13?                                            0.351
                                     Clip 60
   13T) –3 x < 4                Grade C Clip 108
        x is an integer. Write down all the possible values.           –3, –2, –1, 0, 1, 2, 3
   13S) –2 x 3
        x is an integer. Write down all the possible values.           –2, –1, 0, 1, 2, 3


Page 7          ©MathsWatch       www.mathswatch.com       mathswatch@aol.co.uk             Page 7
14T) Here are the front elevation, side elevation and the
             plan of a 3-D shape.
             Draw a sketch of the 3-D shape.        Grade D
         Front elevation           Side elevation
                                                    Clip 81




      Plan




   14S) Here are the front elevation, side elevation and the
             plan of a 3-D shape.
             Draw a sketch of the 3-D shape.

         Front elevation           Side elevation




                                Plan



                              3 of 600
   15T) a)        Work out
                             10                     Grade D                    a)     180


             b)   Work out    5 of 800
                              8
                                                    Clip 55                    b)     500


             c)   Work out    5 × 42
                                                                               c)     30
                              7

   15S) a)        Work out    7 of 400
                             10                                                a)     280

             b)   Work out    2 of 900
                              9                                                b)     200

             c)   Work out    3 × 56
                              8                                                c)     21


Page 8              ©MathsWatch          www.mathswatch.com    mathswatch@aol.co.uk         Page 8
16T) If you share out £240 between Alice and Bill in the                   £60
        ratio 5 : 3, how much more does Alice get compared
        with Bill?
                         Grade C Clip 94
   16S) If you share out £60 between Alice and Bill in the                    £24 for Alice and
        ratio 2 : 3, how much does each of them get?                          £36 for Bill

   17T) Sara and Fred share tips from their job in the ratio                  £14
        2 : 5. If Fred receives £35 how much does Sara get?

                         Grade C Clip 94
   17S) Sara and Fred share tips from their job in the ratio                  £24
        3 : 4. If Sara receives £18 how much does Fred get?




   18T) Some plant heights are measured as shown in the
        table, below.
          Height in cm     Frequency
           0 < h 20             4
          20 < h 40             3
          40 < h 60             2
          60 < h 80             1

         a) Find an estimate for the mean height of a plant.                a) 30
         b) In which interval does the median height lie?                   b) 20 < h 40

   18S) Some plant heights are measured as shown in the
        table, below.
          Height in cm     Frequency
           0 < h 20             1
          20 < h 40             2
          40 < h 60             4
          60 < h 80             3

         a) Find an estimate for the mean height of a plant.                a) 48
         b) In which interval does the median height lie?                   b) 40 < h 60

                          Grade C
                          Clip 133




Page 9          ©MathsWatch       www.mathswatch.com       mathswatch@aol.co.uk         Page 9
Page 10              mathswatch@aol.co.uk   www.mathswatch.com        ©MathsWatch               Page 10
Reflection in y = –x          c)
210987654321
210987654321
210987654321
210987654321
210987654321   76543210987654321
210987654321   76543210987654321
210987654321   76543210987654321
210987654321   76543210987654321
210987654321
210987654321   76543210987654321
               76543210987654321
210987654321
210987654321
      T        76543210987654321
               76543210987654321
                   U
210987654321
210987654321   76543210987654321
               76543210987654321
210987654321   76543210987654321
210987654321   76543210987654321
                                   move U back on to the shaded shape.
                                   Decribe fully the single transformation that will       c)
                                   centre of rotation and label the new shape U
                                   Rotate T 90º clockwise using (0, 0) as the                   b)
                                   Reflect the shaded shape in the x axis and label it T   19S) a)
                                            Grade D Clips 74, 75, 77
 Reflection in y = –x         c)
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
                   U
               76543210987654321
               76543210987654321
               76543210987654321
               76543210987654321
               210987654321
               210987654321
               210987654321
               210987654321
               210987654321
                 T
               210987654321
               210987654321
                                   move U back on to the shaded shape.
               210987654321
               210987654321
               210987654321
               210987654321
               210987654321
                                   Decribe fully the single transformation that will       c)
               210987654321
               210987654321
               210987654321
               210987654321
               210987654321
                                   centre of rotation and label the new shape U
                                   Rotate T 90º anticlockwise using (0, 0) as the               b)
                                   Reflect the shaded shape in the y axis and label it T   19T) a)
20T) a)      Enlarge triangle A scale factor 3 using (2, 4) as
               centre of enlargement
          b)   Enlarge triangle A scale factor ½ using (4, 0) as
               centre of enlargement




                    Grade D Clip 76
   20S) a)     Enlarge triangle A scale factor 2 using (4, 5) as
               centre of enlargement
          b)   Enlarge triangle A scale factor ½ using (-2, 2) as
               centre of enlargement




Page 11          ©MathsWatch       www.mathswatch.com        mathswatch@aol.co.uk   Page 11
21T) Find the exterior angle of this regular octagon
                                                                            45 degrees

                                           Grade D
                                           Clip 70


   21S) Find the exterior angle of this regular hexagon
                                                                            60 degrees




   22T) a)     In the triangle below, find an expression, in terms            a) 4x + 8
               of x, for the perimeter of the triangle.
               Simplify your expression.                                      b) x = 9 cm

          b)   If the perimeter of the triangle     2x           2x
               is 44 cm, find the value of x.

                       Grade C                              8

                       Clip 106
   22S) a)     In the rectangle below, find an expression, in terms           a) 8x + 6
               of x, for the perimeter of the rectangle.
               Simplify your expression.                                      b) x = 5 cm

                               3x + 5



                                                           x–2




          b)   If the perimeter of the rectangle
               is 46 cm, find the value of x.


Page 12          ©MathsWatch        www.mathswatch.com       mathswatch@aol.co.uk           Page 12
23T) Find the size of angle n, giving reasons
                                     A
                                                                        ABC = 60°(angles on st. line
                                                                                 = 180)
                                                                        n = 78° (angles in add
                           B                 C    Grade D                        up to 180)

                                                 Clips 68, 69
   23S) Find the size of angles x and y, giving reasons
                                   A
                                                                       x = 56°  (angles in     =180,
                                                                                base angles are equal)
                                                                       ABC = 56°(base angles of
                                                                                 isos. are equal)
                                                                       y = 124° (angles on st. line
                                                                                = 180°)
                       B                    C


   24T) Find the size of angle x, giving reasons
                                                   Grade D
                                   °
                                                   Clip 67              BRS = 30°(angles on straight
                                                                                 line add up to 180°)
                               °                                        x = 30° (alternate angles)




   24S) Find the size of angles x and y, giving reasons



                                                                        x = 86°    (angles in
                                                                                   quadrilateral
                                                                                   add up to 360°)
                                                                        y = 74°    (alternate angles)




Page 13         ©MathsWatch            www.mathswatch.com   mathswatch@aol.co.uk          Page 13
25T) Solve the following equations
        a) 2x = 7                                                               a)    3.5
        b) x – 8 = 4
        c) 2x + 3 = 11
                                                Grade C                         b)
                                                                                c)
                                                                                      12
                                                                                      4

          d)      x +5=7                        Clip 105                        d)    6
                  3                                                             e)    3
          e)      2(5x – 2) = 26                                                f)    5
                  2 x – 3 = –1                                                  g)    3.5
          f)
                   5
          g)      3x + 4 = 5x – 3

   25S) Solve the following equations
        a) 3x = 12                                                              a)    4
        b) x – 9 = 3                                                            b)    12
        c) 3x + 2 = 14                                                          c)    4
                  x +6=4                                                        d)    –6
          d)
                  3                                                             e)    7
          e)      2(3x + 2) = 46                                                f)    7.5
                  2 x – 6 = –3                                                  g)    –3
          f)
                   5
          g)      4x + 3 = 2x – 3


   26T) Draw a stem and leaf diagram to show the following                        3     4   6
        information.                                                              4     1   7 7 9
        The heights of 12 plants in cm are:                                       5     1   2 2 8
            3.6, 5.2, 4.1, 3.4, 5.8, 6.2, 4.7, 5.2,                               6     2   4
            4.7, 6.4, 5.1, 4.9
                                                                              Key 4 | 1 means 4.1
                                       Grade D Clip 89
   26S) Draw a stem and leaf diagram to show the following                        5     0 2 9
        information.                                                              6     2 4 7 8
        The weights of 10 people in kg are:                                       7     1 5
            59, 52, 81, 67, 75, 62, 50, 64, 68, 71                                8     1
                                                                              Key 6 | 2 means 62

   27T) For each of the following, state whether it is a length,
        area, volume or none of them (a, b, m, q, r, x are lengths)
                            mq                   p2 r   r3                  V A L V A A
           a 2b     2ab      r      ab(m + q)     q     x
                                       Grade C Clip 124
   27S) For each of the following, state whether it is a length,
        area, volume or none of them (a, b, m, q, r, x are lengths)
                                                        pqr   r2            A V A V V L
           ab       2ab2     r2 + rx    ab(m + q)       2      x

Page 14            ©MathsWatch         www.mathswatch.com      mathswatch@aol.co.uk           Page 14
28T) a)      Anne buys 46 litres of diesel at £1.32 per litre.             a)         £60.72
               How much does she spend altogether on diesel?

          b)   James spends £65.72 on 53 litres of petrol.                   b)         £1.24
               How much was each litre of petrol?
                      Grade D Clip 60
  28S) a)      Sara buys 34 litres of diesel at £1.43 per litre.             a)         £48.62
               How much does she spend altogether on diesel?

          b)   Sid spends £57.12 on 42 litres of petrol.                     b)         £1.36
               How much was each litre of petrol?
               2   3                                                                    1 1
  29T) a)      3 + 8                                                         a)           24

          b)
               3   1
               5 – 4
                                            Grade D                          b)             7
                                                                                            20

               3   8
                                            Clips 56                         c)             2
          c)     × 9                                                                        3
               4
                                             and 57
          d)   2   1                                                         d)             4
               3 ÷ 6

               3   2                                                                    1 5
  29S) a)      4 + 3                                                         a)          12
               5   2                                                                        11
          b)   7 – 5                                                         b)             35

          c)    3   6                                                                        9
                                                                             c)
               10 × 8                                                                       40

          d)   4    3                                                        d)             22
               5 ÷ 10                                                                        3
                                                                                        P
   30T) Draw a pie chart to show the following information                          B       C

                                                                                        Plain
                     Crisp flavour Frequency
                        Cheese                                                Cheese 80°
                                       8
                         Plain         19
                                                  Grade D                     Plain  190°
                         Beef                                                 Beef
                        Prawn
                                       6
                                       3
                                                  Clip 86                     Prawn
                                                                                      60°
                                                                                      30°

   30S) Draw a pie chart to show the following information                          B
                                                                                        P
                                                                                                C
                                                                                    Plain
                     Crisp flavour Frequency
                        Cheese         8                                      Cheese 160°
                         Plain         6                                      Plain  120°
                         Beef          1                                      Beef    20°
                        Prawn          3                                      Prawn   60°
Page 15         ©MathsWatch        www.mathswatch.com        mathswatch@aol.co.uk                   Page 15
31T) Find the areas of the following shapes

 a)          7m                          b)
                                                                       a) 21m2

                           3m          4cm                             b) 10cm2

                                                                       c) 160cm2
                                                     5cm



              c)                 18cm

                                                    4cm
                   12cm



                             11cm

                           Grade D
                           Clip 73
      31S) Find the areas of the following shapes

 a)                                      b)                            a) 54m2
             9m

                           6m     7cm                                  b) 42cm2

                                                                       c) 222cm2
                                                12cm



              c)                  24cm

                                                     4cm
                    13cm



                                14cm




Page 16             ©MathsWatch     www.mathswatch.com     mathswatch@aol.co.uk    Page 16
32T) Find the surface area of this cuboid.
                                                                         92cm2



                                                Grade C
      3cm
                                                Clip 121
                                    2cm
                    8cm

  32S) Find the surface area of this cuboid.                              190cm2




      5cm

                                    3cm
                    10cm

   33T) Make the letter in the bracket the subject of the
        formula.
                                                                                     v-u
        a) v = u + at              (a)         Grade C                    a)   a=
                                                                                      t
          b)   x – t = bc
               a
                                    (x)        Clip 107                   b)   x = a(bc + t)
   33S) Make the letter in the bracket the subject of the
        formula.
                                                                                     v2 - u2
        a) v2 = u2 + 2as           (a)                                    a)   a=
                                                                                       2s

          b)   x +y=c               (x)
               a                                                          b)   x = a(c – y)

   34T) Find the following:
        a) 10% of £700                                                    a) £70
        b) 15% of £80                     Grade D                         b) £12
        c) 35% of £600                                                    c) £210
        d) 17.5% of £48                   Clip 52                         d) £8.40




   34S) Find the following:
        a) 40% of £260                                                    a) £104
        b) 15% of £900                                                    b) £135
        c) 85% of £800                                                    c) £680
        d) 17.5% of £240                                                  d) £42




Page 17         ©MathsWatch       www.mathswatch.com        mathswatch@aol.co.uk               Page 17
35T) Sally’s mother lives 80km from Sally. This is the
        journey to her mother’s house.
                                                                                                                    a)     100km/h
                                                  100                                                               b)     30 mins
                           Distance in km from home
                                                                                                                    c)     30km/h
                                                      80

                                                      60

                                                      40

                                                      20


                                                       0800       0900       1000        1100       1200
                                                                                Time

                                 a)                    Sally has a rest at 8.30. What speed had she
                                                       been travelling at until 8.30?
                                 b)                    How long did she rest for?
                                 c)                    What speed did she travel at for the last part of
                                                       the journey to her mother’s house?
                                 d)                    For the return journey, Sally travelled at 60km/h
                                                       without a break. Complete the travel graph to
                                                       show this.
                                                                     Grade C Clip 117
   35S) Sally’s mother lives 90km from Sally. This is the
        journey to her mother’s house.
                                                                                                                    a)     120km/h
                                                                                                                    b)     30km/h
                                           100
      Distance in km from home




                                                      80

                                                      60

                                                      40

                                                      20


                                                      0800       0900       1000        1100       1200
                                                                               Time

                                 a)                    What speed did Sally travel at until her first
                                                       rest?
                                 b)                    What speed did she travel at for the last part of
                                                       the journey to her mother’s house?
                                 c)                    For the return journey, Sally travelled at 80km/h
                                                       without a break. Complete the travel graph to
                                                       show this.


Page 18                                                    ©MathsWatch     www.mathswatch.com       mathswatch@aol.co.uk         Page 18
36T) a)           Complete the table for the equation
                    y = 2x2 – 3x

                    x     –2        –1   0       1   2       3   Grade C          –2   –1      0   1      2      3
                    y     14                                     Clip 116         14       5   0   –1     2      9

          b)        Draw the graph of y = 2x2 – 3x on the
                    axes at the bottom of the page
          c)        Use your graph to find the value of y                        c)    3.6
                    when x = 2.3
          d)        Use your graph to find the value of y                        d)    9
                    when x = –1.5
          e)        Use your graph to solve 2x2 – 3x = 5                         e)    x = –1 and x = 2.5
          f)        Use your graph to solve 2x2 – 3x = 8                         f)    x = –1.3 and x = 2.9

                                     y
                               14


                               13


                               12


                               11


                               10


                               9


                               8


                               7


                               6


                               5


                               4


                               3


                               2


                               1



                               O
                                                                             x
  -2           -1                            1           2        3

                               -1


                               -2




Page 19                 ©MathsWatch          www.mathswatch.com       mathswatch@aol.co.uk             Page 19
36S)    a)        Complete the table for the equation
                    y = 3x2 – x

                     x    –2    –1   0       1   2          Grade C               –2     –1      0   1      2
                     y    14                                Clip 116              14         4   0   2      10

          b)        Draw the graph of y = 3x2 – x on the
                    axes at the bottom of the page
          c)        Use your graph to find the value of y                    c)        5.3
                    when x = 1.5
          d)        Use your graph to find the value of y                    d)        8.25
                    when x = –1.5
          e)        Use your graph to solve 3x2 – x = 10                     e)        x = –1.7 and x = 2


                                y
                           14


                           13


                           12


                           11


                           10


                           9


                           8


                           7


                           6


                           5


                           4


                           3


                           2


                           1



                           O
                                                                         x
  -2           -1                        1           2        3

                           -1


                           -2




Page 20             ©MathsWatch          www.mathswatch.com       mathswatch@aol.co.uk               Page 20
5

   37T) Draw a set of axes going from –5 to +5                                      y = 3x + 1
                                                                                           4

                                                                                                   3
        a) Draw the graph of y = 2x – 3
        b) What is the gradient?                 Grade C          b) 2
                                                                                                   2

                                                                                                   1




   37S) Draw a set of axes going from –5 to +5   Clip 113                -5   -4    -3   -2   -1   O
                                                                                                   -1
                                                                                                        1   2   3   4   5



                                                                                                   -2
        a) Draw the graph of y = 3x + 1                                                                 y = 2x – 3
                                                                                                   -3

        b) What is the gradient?                                  b) 3                             -4

                                                                                                   -5




   38T) The table below shows the probability of an oddly
        shaped 4-sided dice landing on 1, 2, 3, or 4.
        a) Work out the value of x                                                 a)         0.24
        b) If the dice is rolled 1000 times how many 2s                            b)         370
            would you expect to get?
                1        2       3       4
                                                  Grade C
              0.15     0.37 0.24         x        Clip 132
   38S) The table below shows the probability of an oddly
        shaped 4-sided dice landing on 1, 2, 3, or 4.
        a) Work out the value of x                                                 a)         0.23
        b) If the dice is rolled 1000 times how many 3s                            b)         140
            would you expect to get?
                1        2       3       4
              0.29     0.34 0.14         x



                                                                    other answers
   39T) Draw a plane of symmetry on this shape
                                                                    are possible

                                              Grade D
                                              Clip 83

   39S) Draw a plane of symmetry on this shape                      other answers
                                                                    are possible




Page 21        ©MathsWatch       www.mathswatch.com     mathswatch@aol.co.uk                            Page 21
40T)                                    Frequency                                       Frequency
          Height Frequency
          0 to 10    1                  7                                              7
          10 to 20       4              6                                              6
          20 to 30       3
                                        5                                              5
          30 to 40       2
                                        4                                              4

 a)    On the first set of axes,        3                                              3
       draw a frequency diagram
                                        2                                              2
 b)    On the second set of axes,
       draw a frequency polygon         1                                              1

                                        0                                              0
                                            0   10       20 30           40       50       0   10           20 30               40       50
               Grade D                                     Height                                             Height
                                                Frequency                                       Frequency

               Clip 88                          7                                              7

                                                6                                              6

                                                5                                              5
                 ANSWERS for 40T                4                                              4                ×
                                                3                                              3                      ×
                                                2                                              2                           ×
                                                1                                              1       ×
                                                0                                              0
                                                    0   10   20 30      40   50                    0       10       20 30      40   50
                                                               Height                                                 Height


40S)                                    Frequency                                       Frequency
          Height Frequency
          0 to 10    3                  7                                              7
          10 to 20       7              6                                              6
          20 to 30       2
                                        5                                              5
          30 to 40       1
                                        4                                              4

 a)    On the first set of axes,        3                                              3
       draw a frequency diagram
                                        2                                              2
 b)    On the second set of axes,
       draw a frequency polygon         1                                              1

                                        0                                              0
                                            0   10       20 30           40       50       0   10           20 30               40       50
                                                           Height                                             Height
                                                Frequency                                       Frequency

                                                7                                              7                ×
                                                6                                              6

                                                5                                              5
                 ANSWERS for 40S                4                                              4

                                                3                                              3       ×
                                                2                                              2                      ×
                                                1                                              1                           ×
                                                0                                              0
                                                    0   10   20 30      40   50                    0       10       20 30      40   50
                                                               Height                                                 Height

Page 22              ©MathsWatch    www.mathswatch.com                   mathswatch@aol.co.uk                              Page 22
41T) a)     In a room there are 7 boys and 3 girls.                              a) 70%
               What percentage of the people are boys?

                                                                                    b) 35%
          b)   In a room there are 13 boys and 7 girls.
               What percentage of the people are girls?

                                                                                    c) 60%
          c)   Sally scores 24 marks out of 40 in a Science test.
               What was her percentage score?

                     Grade D Clip 54
   41S) a)     In a room there are 11 boys and 9 girls.                             a) 55%
               What percentage of the people are boys?

          b)   In a room there are 13 boys and 12 girls.                            b) 48%
               What percentage of the people are girls?

                                                                                    c) 90%
          c)   Emma scores 54 marks out of 60 in a Science test.
               What was her percentage score?


   42T) A point, P, moves so that the locus of P is always 2 cm
        from the line AB.
        Draw the locus of P.
                                   Grade C Clip 130


                                                   B

                 A




   42S) A point, P, moves so that the locus of P is always
        equidistant from lines AB and AC.
        Draw the locus of P.


                                   B

      A




                                               C
Page 23         ©MathsWatch        www.mathswatch.com        mathswatch@aol.co.uk            Page 23
43T) a)     Sketch a scatter diagram with positive                         a)
               correlation                                                                        ×
                                                                                            ×
                                                                                             ×
                                                                                         × ×
                                                                                      ×× ××
          ‘hair length’, ‘hair colour’, ‘intelligence,’                             ×× ×
          ‘circumference of wrist’, ‘height’, ‘ice cream                           ××
          sales’, ‘weight’, ‘outside temperature’
          ‘sale of extra-warm jackets’, ‘eye colour’
                                                                       b) (i) height and weight
          b)   From the list above select two sets of data which
               would have                                                  or Ice cream sales and
                                                                              temp.
               (i) a positive correlation
                                                                        (ii) hair length and hair colour
               (ii) no correlation                                        or hair colour and intelligence
                    Grade D Clip 87                                           etc

   43S) a)     Sketch a scatter diagram with negative                         a)
                                                                                   ××
               correlation
                                                                                    ××
                                                                                     ×   ×
                                                                                         ×
          ‘hair length’, ‘hair colour’, ‘intelligence,’                                  ×× ×
                                                                                            ××
          ‘circumference of wrist’, ‘height’, ‘ice cream                                    × ×
          sales’, ‘weight’, ‘outside temperature’
          ‘sale of extra-warm jackets’, ‘eye colour’
          b)   From the list above select two sets of data which       b) (i) temp. and sale of jackets
               would have                                               (ii) eye colour and intelligence
               (i) a negative correlation                                 or hair length and weight
               (ii) no correlation                                            etc


   44T) a)     What are the first four multiples of 7?                 a) 7 14 21 28
        b)     Write down all the factors of 30.                       b) 1 2 3 5 6 10 15 30
        c)     What are the first six prime numbers?                   c) 2 3 5 7 11 13

   44S) a)     What are the first four multiples of 5?                 a) 5 10 15 20
        b)     Write down all the factors of 40.                       b) 1 2 4 5 8 10 20 40
        c)     Which two prime numbers come next, after 13?            c) 17 19
                    Grade D Clip 44
   45T) Solve the inequality         2x + 3 < 11                        x<4
   45S) Solve the inequality         5x – 7 > 43                        x > 10

                   Grade C Clip 109
   46T) Evaluate 53                                                     125
                               Grade D Clip 45                          16
   46S) Evaluate 24




Page 24         ©MathsWatch        www.mathswatch.com      mathswatch@aol.co.uk             Page 24
47T) Find the volume of this triangular prism.



                                                                           Volume = 84cm3
          6cm
                                    7cm            Grade C
                     4cm
                                                   Clip 122
   47S) Find the volume of this triangular prism.



                                                                           Volume = 160cm3
          4cm
                                       m
                                    10c
                     8cm

   48T) a)      Write as a power of 7
                73 × 75
                                              Grade C                     a)       78

          b)    Write as a power of 2         Clip 111                    b)       26
                28 ÷ 22

   48S) a)      Write as a power of 5                                     a)       57
                52 × 54 × 5
          b)    Write as a power of 3                                     b)       35
                39 ÷ 34

   49T) Complete the two-way table which shows the favourite
        soup of 100 people.
                       Oxtail   Tomato      Chicken   Total
                                                                                   Oxtail   Tomato    Chicken   Total
            Male        25                             42                 Male      25       12         5        42
           Female                  18         11                         Female     29        18        11       58
                                                                          Total     54        30        16      100
            Total                             16      100


                Grade D Clip 85
   49S) 110 students studied History and Geography as shown
        in the two-way table.
                     History Geography       Both     Total
                                                                                  History Geography     Both     Total
           Female                                                       Female     11        12          35       58
            Male                  8                                      Male      4         8           40       52
            Total       15        20                  110                Total      15       20          75      110


          40 males studied both subjects.
          52 of the students were male.
          Complete the two-way table.

Page 25          ©MathsWatch       www.mathswatch.com         mathswatch@aol.co.uk                    Page 25
50T) Measure this angle.




                                                                     48°




   50S) Measure this angle.
                                          Grade D
                                          Clip 79
                                                                     114°




   51T) The price of a pair of shoes is £75.                       £82.50
        How much are they after a price increase of 10%?

   51S) A new car costs £8000.          Grade C Clip 93
                                                                   £6800
        If the price is reduced by 15% what is the new price?

   52T) 73.5 ÷ 0.21                                                350
                                    Grade C Clip 100
   52S) 18.02 ÷ 0.34                                               53

   53T) What are the first 5 terms of the number sequence          5 8 11 14 17
        with the nth term of 3n + 2?
                  Grade D Clip 65
   53S) What are the first 5 terms of the number sequence          1 5 9 13 17
        with the nth term of 4n – 3?

Page 26        ©MathsWatch      www.mathswatch.com     mathswatch@aol.co.uk       Page 26
54T) Translate triangle A by vector -5
                                        -3




                                                                          87654321
                                                                          87654321
                                                                          87654321
                                                                          87654321
                                                                          87654321
                                                                          87654321
                                                                          87654321
                                                                          87654321




                           Grade D Clip 77
   54S) Describe fully the transformation which maps triangle
        A onto triangle B.

                                                                      Translation by vector -6
                                                                                             1

          B




                                         ..                                      3
  55T) Change the recurring decimal 0.27 into a fraction in
       its simplest form.                                                       11
                                         ..                                      7
   55S) Change the recurring decimal 0.63 into a fraction in
        its simplest form.                                                      11

                           Grade C Clip 98



Page 27         ©MathsWatch      www.mathswatch.com      mathswatch@aol.co.uk         Page 27
56T) What is the equation of the line?                                  y = 2x + 1
                                      y
                                 5

                                 4

                                 3

                                 2

                                 1

                                                              x
              -3     -2     -1   O          1    2       3
                                 -1

                                 -2

                                 -3
                                            Grade D Clip 114
   56S) What is the equation of the line?                                 y = 3x – 2
                                      y
                                 5

                                 4

                                 3

                                 2

                                 1


              -3     -2     -1   O          1    2       3
                                 -1

                                 -2

                                 -3
  57T) List all of the outcomes if you roll a dice and                    1H 2H 3H 4H 5H 6H
       flip a coin.                                                       1T 2T 3T 4T 5T 6T
   57S) List all of the outcomes if you flip three coins.                 HHH HHT HTH THH
                                                                          TTT TTH THT HTT
                     Grade D Clip 90
Page 28         ©MathsWatch       www.mathswatch.com         mathswatch@aol.co.uk      Page 28
58T) Use a protractor to work out the bearing of A from B.
                                                                      Bearing of A from B is 293°

                                       Grade C Clip 131

                                                                  A

                   A

     N

                                                                                               B
                                                 B




   58S) Use a protractor to work out the bearing of B from A.
                                                                      Bearing of B from A is 046°
                                                                                                    B
     N                                               B




                             A                                          A


  59T) In the list of fractions, below, which two are
       equivalent to 4 ?
                         5
            5      8          8   10     16    18                        8    16
            6      9         10   11     20    24                       10    20
   59S) In the list of fractions, below, which two are
        equivalent to 2 ?
                         3
            8      7          6    8     10    14                        8    14
           12      8         12   14     16    21                       12    21
                       Grade C Clip 47
  60T) A map has a scale of 1:100 000.
       If town A is 5cm away from town B on the map, what is           5km
       the actual distance between them in kilometres?
   60S) A map has a scale of 1:500 000.
        If town A is 3cm away from town B on the map, what is          15km
        the actual distance between them in kilometres?
                       Grade C Clip 61

Page 29         ©MathsWatch        www.mathswatch.com    mathswatch@aol.co.uk           Page 29
61T) a)       -3 × -4                  61S) a)       6 × -3                   a)   12      a)    -18
       b)       7 × -5                        b)       -10 × -2                 b)   -35     b)    20
       c)       -12 ÷ 4                       c)       15 ÷ -3                  c)   -3      c)    -5
       d)       -8 – 6                        d)       12 – 18                  d)   -14     d)    -6
       e)       9 – -5                        e)       2 – -13                  e)   14      e)    15
       f)       10 + -6                       f)       15 + -17                 f)   4       f)    -2
       g)       -4 + -5                       g)       -6 + -8                  g)   -9      g)    -14
                    Grade C Clip 99
  62T) Use the graph to solve the simultaneous equations
       y = 7 – x and y = 2x – 2
                y
            8
                                              y = 2x – 2                        x = 3 and y = 4
                    y=7–x
            7

            6

            5

            4

            3

            2

            1

            0                                                   x
                0     1    2     3   4    5      6     7   8

                      Grade C Clip 115
   62S) Use the graph to solve the simultaneous equations
        y = 8 – 2x and y = ½x + 3
                y
            8
                    y = 8 – 2x                                                  x = 2 and y = 4
            7                                                  y = ½x + 3

            6

            5

            4

            3

            2

            1

            0                                                   x
                0     1    2     3   4    5      6     7   8




Page 30             ©MathsWatch      www.mathswatch.com             mathswatch@aol.co.uk          Page 30
40         400
                                  37.9 × 417                                             37.9 × 417
  63T) Estimate the answer to                                             1000           1.94 × 8.03
                                  1.94 × 8.03                                                2          8

                                    873 × 18                                            900            20
   63S) Estimate the answer to                                            180
                                      104                                               873 × 18
                                                                                          104
                    Grade C Clip 101                                                             100


  64T) Point P has coordinates (7, 4, 3)
       Point T is the intersection of PR and SQ.
       Work out the coordinates of T.                                     (3.5, 2, 3)
                     y

                                                       Grade C
                                                       Clip 120

          S
              .                     .
                                    P


                         .
                         T                                       x


          R   .                     .   Q
      z

   64S) Point P has coordinates (8, 3, 4)
        a) Work out the coordinates of T.                                 a)     (8, 3, 0)
        b) Work out the coordinates of S.                                 b)     (0, 0, 4)
                     y



                                               .   T


                                    .
                                    P

                                                                x


          S   .
      z

  65T) If the probability of passing a driving test is 0.42 what is       0.58
       the probability of failing the test?

   65S) The probability of a school football team winning a               0.45
        football match is 0.34 and the probability of
        losing is 0.21.
        What is the probability of the team drawing the match?
              Grade D Clip 91
Page 31           ©MathsWatch     www.mathswatch.com        mathswatch@aol.co.uk                   Page 31
66T) Draw the net of this right-angled triangular prism.


                                     5 squares
                                                        Grade D
          4 squares                                     Clip 82
                                         ares
                        3 squares   5 squ




   66S) Draw the net of this cuboid


                                     3 squares
                                                              2 squares
                                                 5 squares




Page 32               ©MathsWatch       www.mathswatch.com   mathswatch@aol.co.uk   Page 32
67T) Write the following fractions in their simplest forms.

          a) 16                                                        a)    4
             20                                                              5
              9                                Grade D                       3
          b) 15                                                        b)
                                               Clip 48                       5
          c) 24                                                        c)    2
               60                                                            5
   67S) Write the following fractions in their simplest forms.

          a) 12                                                        a)    2
               30                                                            5
          b)   7                                                       b)    1
               21                                                            3
          c) 40                                                        c)    5
               64                                                            8

  68T) Here are the ingredients needed to make salmon
       fishcakes for four people.
                     450g potatoes
                     900g of salmon
                     25g butter                    Grade D
                     15g dill                      Clip 62
                     50g flour
                     2 eggs
                     150g breadcrumbs
          a)   What weight of salmon would be needed to use            a)   1350g
               the recipe for six people?

          b)   For seven people, what weight of flour is needed?       b)   87.5g

   68S) Here are the ingredients needed to make shepherd's pie
        for five people.
                     500g potatoes
                     50g of cheese
                     150g butter
                     1 onion
                     2 carrots
                     300ml stock
                     1kg of lamb
          a)   What weight of cheese would be needed to use            a)   80g
               the recipe for eight people?

          b)   For six people, how much stock is needed?               b)   360ml
          c)   For nine people, what weight of lamb                    c)   1.8kg
               should be used?



Page 33             ©MathsWatch      www.mathswatch.com    mathswatch@aol.co.uk     Page 33
69T) Put these fractions in order of size, smallest to largest.
                      5        7    2      3                                  7           5      2       3
                      8        12   3      4                                  12          8      3       4

   69S) Put these fractions in order of size, smallest to largest.
                      4        9    7      1                                  9           1     7        4
                      5        20   10     2                                  20          2     10       5

                          Grade D Clip 49

  70T) a)     What is the square of 6?                                   a)        36
                                                    Grade D
       b)     Find the cube of 4.                                        b)        64
       c)     What is the square root of 49?
                                                    Clip 46              c)        7
       d)     What is the cube root of 27?                               d)        3
       e)     Evaluate 144                                               e)        12

   70S) a)    What is the square of 8?                                   a)        64
        b)    Find the cube of 2.                                        b)        8
        c)    What is the square root of 100?                            c)        10
        d)    What is the cube root of 125?                              d)        5
        e)    Evaluate 169                                               e)        13


  71T) Sara wishes to find out how much pocket money people            How much pocket money do you
       in her class received.                                          receive each week?
       Design a suitable question she could use                        Less than £2
       on a questionnaire.                                             Between £2.01 and £4
                                                                       More than £4
       You should include some tickboxes.

   71S) Fred wants to know which sports are watched by pupils in      Sport             Tally        Frequency
        his class.                                                    Football
        Design a suitable data collection sheet he can use            Cricket
        to find out.                                                  Tennis
                                                                      Athletics
                           Grade D Clip 84
                                                                      Rugby
                          Grade C Clip 134                            Other


  72T) Change the following fractions to decimals.
       a) 4      b) 3                                                    a)        0.8          b)     0.375
               5           8

   72S) Change the following fractions to decimals.                      a)        0.6          b)     0.625
        a) 6      b) 5
              10           8

               Grade D Clip 58


Page 34            ©MathsWatch      www.mathswatch.com      mathswatch@aol.co.uk                 Page 34
Questions 73 to 85 are all calculator questions
  73T) Find the length of sides A, B and C giving your answers to
       one decimal place.
                                                   14cm
                                                                           A      13.9cm

                                                                           B      18.2cm
                     A                                                B
      12cm                                 23cm
                                                                           C      5.6cm

                  7cm


  Grade C
                              C                           3.9cm
  Clip 118


                                   6.8cm

   73S) Find the length of sides A, B and C giving your answers to
        one decimal place.
                                                                           A      14.4cm
                                                              58cm
                                                                           B      111.9cm
                     17cm
          A                                126cm
                                                                           C      12.7cm

                  9cm                                             B

                      9.5cm

                                           8.5cm

                         C

  74T) The equation x3 + 2x = 20 has a solution between 2 and 3.          x=2       23 + 2 × 2 = 12              Too low
                                                                          x=3       33 + 2 × 3 = 33              Too big
       Use a trial and improvement method to find this solution.
                                                                          x = 2.4 2.43 + 2 × 2.4 = 18.624        Too low
       Give your answer to 1 decimal place and show all workings.         x = 2.5 2.53 + 2 × 2.5 = 20.625        Too big
                                                                          x = 2.45 2.453 + 2 × 2.45 = 19.60612   Too low
                                                                                  x = 2.5 to 1 decimal place.
                                                                          x=4       43 – 4 × 4 = 48              Too low
   74S) The equation x3 – 4x = 88 has a solution between 4 and 5.         x=5       53 – 4 × 5 = 105             Too big
        Use a trial and improvement method to find this solution.         x = 4.7 4.73 – 4 × 4.7 = 85.023        Too low
        Give your answer to 1 decimal place and show all workings.        x = 4.8 4.83 – 4 × 4.8 = 91.392        Too big
                                                                          x = 4.75 4.753 – 4 × 4.75 = 88.17187   Too big
                        Grade D Clip 110                                          x = 4.7 to 1 decimal place.

Page 35         ©MathsWatch       www.mathswatch.com          mathswatch@aol.co.uk                   Page 35
75T) a)        34% of £28.76 =                         Grade D               a)   £9.78
       b)        76% of 900 =                                                  b)   684
                                                         Clip 46
       c)        Reduce £45.50 by 12.5%                                        c)   £39.81
   75S) a)       29% of £235.60 =                                              a)   £68.32
        b)       43% of 2400 =                                                 b)   1032
        c)       Reduce £260 by 30%                                            c)   £182
  76T) If £1 = 1.23 Euros,                                Grade D
       a) Change £38 to Euros.                            Clip 64              a)   46.74 Euros
       b) Change 650 Euros to pounds (£).                                      b)   £528.46
   76S) If £1 = 1.27 Euros,
        a) Change £2000 to Euros.                                              a)   2540 Euros
        b) Change 923 Euros to pounds (£).                                     b)   £726.77
  77T) a)        Find the area of the following circles.
                 Give both answers to 1 decimal place.
      (i)                                        (ii)                          a)   (i) 153.9cm2
                                                                                    (ii) 452.4cm2
                      7cm
                                                          24cm




            b)   Find the area of this quarter circle.                         b)   78.5cm2

    Grade D Clip 71
                                                             10cm
   77S) a)       Find the area of the following circles.
                 Give both answers to 1 decimal place.
      (i)                                        (ii)                          a)   (i) 380.1cm2
                                                                                    (ii) 243.3cm2
                      11cm
                                                         17.6cm




            b)   Find the area of this semicircle.                19cm         b)   141.8cm2




Page 36            ©MathsWatch        www.mathswatch.com          mathswatch@aol.co.uk           Page 36
78T) Which is the best value for money                                    0.55p per gram
       500g of sausages for £2.75 or                                        0.57p per gram
       650g of the same type of sausages for £3.70?                         500g for £2.75 best value
       You must show all your working.
   78S) Which is the best value for money                                   0.106p per ml
        800ml of orange juice for £0.85 or            Grade D               0.13p per ml
        350ml of orange juice for £0.46?              Clip 50               800ml for £0.85 best value
        You must show all your working.

  79T) a)        Find the circumference of the following circles.
                 Give both answers to 1 decimal place.
      (i)                                      (ii)                         a)   (i) 44.0cm
                                                                                 (ii) 75.4cm
                      7cm
                                                       24cm




            b)   Find the perimeter of this                                 b)   35.7cm
                 quarter circle to 1 decimal place.
    Grade D Clip 72
                                                          10cm
   79S) a)       Find the circumference of the following circles.
                 Give both answers to 1 decimal place.
      (i)                                      (ii)                         a)   (i) 69.1cm
                                                                                 (ii) 55.3cm
                      11cm
                                                      17.6cm




                                                                            b)   48.8cm
            b)   Find the perimeter of this semicircle              19cm
                 to 1 decimal place.




Page 37            ©MathsWatch       www.mathswatch.com        mathswatch@aol.co.uk            Page 37
80T) a)      Change the following to percentages.
               Give your answers to 1 decimal place.
               (i) 17 out of 67                                        a)   (i) 25.4%
               (ii) 134 out of 386                                          (ii) 34.7%
          b)   If Sue scores 82 marks out of a possible 120 marks,     b)   68.3%
               what was her score as a percentage?

   80S) a)     Change the following to percentages.
               Give your answers to 1 decimal place.
               (i) 44 out of 78                                        a)   (i) 56.4%
               (ii) 12.6 out of 59                                          (ii) 21.4%
          b)   If Sue scores 14 marks out of a possible 75 marks,      b)   18.7%
               what was her score as a percentage?
                         Grade D Clip 53
  81T) Find the volume of this cylinder.
       Give your answer to 1 decimal place.
                               9cm
                                                                       Volume = 6107.3cm3
                                                 Grade D
                                         24cm
                                                 Clip 122



   81S) Find the volume of this cylinder.
        Give your answer to 1 decimal place.
                          20cm
                                                                       Volume = 14765.5cm3


                                         47cm




                      8.23 + 2.32                                      23.59360083
  82T) Evaluate                                                                      = 0.907097302
                     (12.4 – 7.3)2                  Grade D                26.01

                                                    Clip 63
                     19.62 + 73 + 25                                   403.5249167
                                                                                     = 3.433767009
   82S) Evaluate                                                       117.5166852
                          3
                         5 –     56




Page 38          ©MathsWatch          www.mathswatch.com   mathswatch@aol.co.uk          Page 38
83T) Find the length of the line.
      y
          6
                                                                          5cm
                                                       Grade C
          5                                                                6
                                                       Clip 119
                                                                           5
          4
                                                                           4
          3
                                                                           3

          2                                                                2

          1                                                                1


                                                   x                       O      1    2   3    4   5    6
          O        1     2    3      4     5   6

   83S) Find the length of the line to 1 decimal place.
       y
          6
                                                                          5.4cm
          5                                                                6

          4                                                                5

                                                                           4
          3
                                                                           3
          2
                                                                           2
          1                                                                1

                                                   x
          O        1     2    3      4     5   6                           O      1   2    3    4   5    6



  84T) a)          A cyclist travels 12 miles in 2 hours.                 a)    6mph
                   What is the cyclist's speed in mph?      Grade C
              b)   Sue walks for 45 minutes at 14mph.                     b)    10.5 miles
                   How far does she travel?
                                                            Clip 126
              c)   A piece of lead has a mass of 340g and a               c)    11.3 g/cm3
                   volume of 30cm3.
                   Work out its density in g/cm3.
   84S) a)         A cyclist travels at 14.3mph for 4 hours.              a)    57.2 miles
                   What distance does he cover?
              b)   Sue drives at an average speed of 57mph and covers     b)    4 hours 30 minutes
                   a distance of 256.5 miles.
                   How long does the journey take in hours
                   and minutes?
              c)   A piece of lead has a density of 12g/cm3 and a         c)    166.7cm3
                   mass of 2kg.
                   Work out its volume in cm3.

Page 39                ©MathsWatch       www.mathswatch.com   mathswatch@aol.co.uk             Page 39
85T) The two triangles are similar.



                                                       37.8cm
                                          x
                          y
     5cm


                    8cm                            43.2cm

           a)   Work out the size of x.                                 a)   x = 27cm
           b)   Work out the size of y.                                 b)   y = 7cm


   85S) BE is parallel to CD
        Find the length of BC.                Grade C                   BC = 8cm
                                              Clip 123
                              A



                     10cm



                    B                          E
                                  12cm
                x


           C                                                    D
                                    21.6cm




Page 40             ©MathsWatch     www.mathswatch.com      mathswatch@aol.co.uk        Page 40
22 Essential Questions at grade B
            (A calculator can be used on all questions apart from qu. 13)


    1T) Solve these two simultaneous equations
           2r + 3s = 6
           3r – 2s = 22           Grade B Clip 142                               r = 6 and s = –2


    1S) Solve these two simultaneous equations
           h + 3t = –10                                                          h = 2 and t = –4
           2h – t = 8



    2T) Mary recorded the heights, in centimetres, of the girls in
                                                                                 a)   LQ = 152
          her class.
                                                         Grade B                 b)   UQ = 177
          She put the heights in order.
                                                         Clip 152
          132 144 150 152 160 162 162 167
          167 170 172 177 181 182 182

      a) Find the lower quartile
      b) Find the upper quartile
      c) On the grid, draw a boxplot for this data.




    2S) Mary recorded the heights, in centimetres, of the girls in
          her class.                                                             a)   LQ = 154
          She put the heights in order.                                          b)   UQ = 181

          131 142 142 150 158 161 165 169
          169 169 173 179 183 185 186 188

      a) Find the lower quartile
      b) Find the upper quartile
      c) On the grid, draw a boxplot for this data.




Page 41          ©MathsWatch              www.mathswatch.com         mathswatch@aol.co.uk           Page 41
3T) Work out the lengths or angles indicated by the
        letters a to d.




                                                                                a = 23.2cm
                     25cm                                       b
   a                                                                 8cm        b = 58.4°

                                                                                c = 61.8cm
                                                  13cm
                      68°
                                                                                d = 64.6°

                                   Grade B
                                   Clip 153
                            50cm             42cm

                             36°

                        c                      d

                                                   18cm

    3S) Work out the lengths or angles indicated by the
        letters e to h.
                                                              13cm
                 e                                                              e = 56.9°
                                              f
  15cm
                                                                                f = 24.5cm


                       23cm                        32°                          g = 21.3cm

                                                                                h = 54.1°

                                                          h
           14°

                      22cm          19.6cm
       g                                                 24.2cm




Page 42              ©MathsWatch     www.mathswatch.com        mathswatch@aol.co.uk          Page 42
4T) TR and TQ are tangents to the circle
       a) Explain why angle PQR = 42º                            a) PQT = 90°(Tangent meets
                                                                             radius at 90°)
                                             Grade B               90° – 48° = 42°

                                             Clip 150
                                                                 b) PRQ = 90°(angle in semicircle
                                                                              is 90°)
                                                                   TRQ = 48°(tri. TRQ is isosceles
                                                                              and base angles are
                                                                               equal)
                                                                   PRT = 90° + 48° = 138°


          b) Find the size of angle PRT giving reasons


    4S) TR and TQ are tangents to the circle
       a) Explain why angle PQR = 35º
                                                                 a) PQT = 90°(Tangent meets
                                                                              radius at 90°)
                                                                   90° – 55° = 35°


                                                                 b) PRQ = 90°(angle in semicircle
                                                                              is 90°)
                                                                   TRQ = 55°(tri. TRQ is isosceles
                                                                              and base angles are
                                                                              equal)
                                                                   PRT = 90° + 55° = 145°

          b) Find the size of angle PRT giving reasons

                                            a
    5T) Find angles a and b                                           a = 85° (opp angles of cyclic
                                   105°                                        quad. add up to 180)
                                                                      b = 75°(opp angles of cyclic
          Grade B                   95°         b
                                                                              quad. add up to 180)
          Clip 150
    5S) Find angles a and b            b                              a = 55° (opp angles of cyclic
                                   125°                                        quad. add up to 180°)
                                                 a
                                                                      b = 117°(opp angles of cyclic
                                      63°                                     quad. add up to 180°)


Page 43           ©MathsWatch       www.mathswatch.com   mathswatch@aol.co.uk           Page 43
6T)     Find the size of angle x.                                         x = 112°

                                       124




                                o
                            x




                                                 Grade B
  6S)     Find the size of angle y.
                                                 Clip 150                   y = 138°




                          84
                                o




                                             y




  7T)     a)   John places £13000 in a bank which pays 4.6%            a)   £1877.79
               compound interest per year. How much interest
               does he earn if he leaves the money in the bank
               for 3 years?
          b)   Sue buys a new car for £8700.                           b)   £2354.90
               Its annual rate of depreciation is 23% per year.
               How much is it worth after 5 years?
                        Grade B Clip 142
  7S)     a)   Sarah buys a 5-year bond which pays compound            a)   £10605.19
               interest of 5.8% per year. She buys the bond for
               £8000. How much can she cash the bond in for at
               the end of the 5 year period?
          b)   Tom buys a house for £145000.                           b)   £135223.35
               It will depreciate at the rate of 2.3% per year for
               the next three years. How much will it then be worth?

Page 44          ©MathsWatch          www.mathswatch.com   mathswatch@aol.co.uk          Page 44
8T) The heights of 64 plants were measured and can be
        seen in this table.      Height (cm)      Frequency
                                           0 < h < 10                3
                                          10 < h < 20                7
     Grade B                              20 < h < 30               23
     Clip 151                             30 < h < 40               24
                                          40 < h < 50                5
                                          50 < h < 60                2

           a)      Complete this cumulative frequency table.                  a)
                            Height (cm)      Cumulative Frequency                           Height (cm)         Cumulative Frequency
                           0 < h < 10                 3                                    0 < h < 10                       3
                           0 < h < 20                                                      0 < h < 20                      10
                           0 < h < 30                                                      0 < h < 30                      33
                           0 < h < 40                                                      0 < h < 40                      57
                           0 < h < 50                                                      0 < h < 50                      62
                           0 < h < 60                                                      0 < h < 60                      64
           b)      Draw a cumulative frequency curve for your table.
           c)      Use your graph to find an estimate for the        b)
                                                                       80
                   interquartile range of the heights of the plants.
                                                                     CF
          80                                                                   70



    CF                                                                                                                               x
                                                                               60
                                                                                                                                x
                                                                                                                      x
          70
                                                                               50                   UQ

          60                                                                   40


                                                                                               median          x
                                                                               30

          50
                                                                               20
                                                                                               LQ

          40                                                                   10                        x
                                                                                               x
                                                                                   0
                                                                                       0       10        20    30     40        50   60
          30                                                                                                  Height (cm)
                                                                              c)            IR = UQ – LQ
          20                                                                                   = 34.5 – 23.5
                                                                                               = 11cm
          10



          0
               0      10         20        30        40        50        60
                                          Height (cm)
Page 45             ©MathsWatch            www.mathswatch.com            mathswatch@aol.co.uk                              Page 45
8S) The weights of 72 boxes of recycled metals can be
        seen in this table.
                                          Weight (kg)               Frequency
                                          0 < w < 10                    8
                                          10 < w < 20                 12
                                          20 < w < 30                 18
                                          30 < w < 40                 24
                                          40 < w < 50                  7
                                          50 < w < 60                  3

           a)      Complete this cumulative frequency table.                    a)
                            Weight (kg)      Cumulative Frequency                             Weight (kg)         Cumulative Frequency
                           0 < w < 10                 8                                      0 < w < 10                       8
                           0 < w < 20                                                        0 < w < 20                      20
                           0 < w < 30                                                        0 < w < 30                      38
                           0 < w < 40                                                        0 < w < 40                      62
                           0 < w < 50                                                        0 < w < 50                      69
                           0 < w < 60                                                        0 < w < 60                      72
           b)      Draw a cumulative frequency curve for your table.
           c)      Use your graph to find an estimate for the        b)
                                                                      80
                   interquartile range of the weights of the boxes.
                                                                    CF                                                                 x
          80                                                                     70
                                                                                                                                  x
    CF                                                                           60
                                                                                                                        x

          70                                                                                          UQ
                                                                                 50




          60                                                                     40
                                                                                                 median          x

                                                                                 30

          50
                                                                                 20              LQ        x

          40                                                                     10
                                                                                                 x

                                                                                     0
                                                                                         0       10        20    30     40        50   60
          30                                                                                                    Weight (kg)
                                                                                c)            IR = UQ – LQ
          20                                                                                     = 36.2 – 18.5
                                                                                                 = 17.7kg
          10



          0
               0      10         20        30        40        50          60
                                          Weight (kg)
Page 46             ©MathsWatch            www.mathswatch.com              mathswatch@aol.co.uk                              Page 46
9T) The table shows the amount of ice-creams that David
        sells over a six week period.
 Week 1        Week 2       Week 3         Week 4   Week 5     Week 6
   235          294          360            258      310            378

          a)    Work out the 3-week moving averages for                     a) 296.3 304 309.3 315.3
                this information.
          b)    Work out the 4-week moving averages for                     b) 286.75 305.5 326.5
                this information.
                      Grade B Clip 153
    9S) The table shows the quantity of fleeces sold by a shop
        in a 6-month period.
   Jan          Feb          Mar            Apr      May            Jun
   200          172          134            101       78            25

          a)    Work out the 3-month moving averages for                    a) 168.7 135.7 104.3 68.0
                this information.
          b)    Work out the 4-month moving averages for                    b) 151.75 121.25 84.5
                this information.

   10T) Two fair six sided dice are rolled.
        a) Complete the tree diagram to show the outcomes.                  a)                1
                                                                                              6           6
                                   Red dice                Blue dice             1      6
                                                                                 6                        not
                                                                                              5
                                                                                              6            6
                        1                                                                         1
                        6            six                                                not       6       6
                                                                                 5
                                                                                 6       6                not
                                                    Grade B                                   5
                                                                                              6            6
                                     not
                                     six            Clip 154
                                                                           b)        5    5    10
          b)     What is the probability of rolling a six on                            +    =
                                                                                     36   36   36
                 one dice and 'not a six' on the other dice?
  10S) Two coins are flipped.
       a) Complete the tree diagram to show the outcomes.                   a)                1
                                                                                              2           H
                                   Coin 1                  Coin 2                1      H
                                                                                 2
                                                                                              1           T
                        1                                                                     2
                                     head                                                         1
                        2                                                                         2       H
                                                                                 1
                                                                                 2      T
                                                                                              1           T
                                                                                              2
                                     tail
          b)     What is the probability of flipping a head on             b)        1   1            2
                                                                                       +   =
                 one coin and a tail on the other coin?                              4   4            4

Page 47          ©MathsWatch           www.mathswatch.com       mathswatch@aol.co.uk              Page 47
11T) a)     In a sale, all the prices have been reduced by 15%.       a) £17
               The sale price of a shirt is £14.45
               What was the pre-sale price of the shirt?
          b)   The price of a computer is £799. This price               b) £680
               includes VAT which is 17.5%.
               What is the cost of the computer before
               VAT is added?
                         Grade B Clip 138
   11S) a)     A bank pays interest of 6.8% per year.                    a) £2100
               Emma places some money in the bank and, one
               year later, after the interest has been paid,
               she has £2242.80 in her account.                          b) £4500
               How much did she put in the bank?
          b)   After a reduction of 12.5%, Sam pays £3937.50
               for a car.
               How much was the car before the reduction?
   12T) In September 2007, Jim weighed 85.0kg.                           2%
        In September 2008, he weighed 86.7kg.
        What was his percentage increase in weight?
                         Grade B Clip 136
   12S) The price of a car decreases from £7600 to £5168                 32%
        in one year.
        What is the percentage depreciation in this year?

                 3       3                  1       2                         7
                                                                         a) 3 20     b)   23
   13T) a) 2     5   +   4
                                     b) 1   6   –   5                                     30

                 1           2              1            2                       1
          c) 4       ×3              d) 5       ÷2                       c)16    2
                                                                                     d) 2
                 2           3              3            3
                         Grade B Clip 139
                 2           1              2            5               a) 3 13     b) 1   5
   13S) a) 1     9   +2      2
                                     b) 4   3   – 2      6                    18            6


          c) 2   1           1       d) 3   4        5                   c) 12       d) 10
                 4   ×5      3              7   ÷   14

                                                                         a) (x + 2)(x + 4) = 0
   14T) Factorise and solve the following equations:                        x = -2 or x = -4
        a) x2 + 6x + 8 = 0                                               b) (x + 5)(x – 2) = 0
        b) x2 + 3x – 10 = 0                         Grade B                 x = -5 or x = 2
                                                                         c) (x – 5)(x – 2) = 0
        c) x2 – 7x + 10 = 0                                                 x = 5 or x = 2
        d) 6x2 + 7x – 3 = 0
                                                    Clip 140             d) (2x + 3)(3x – 1) = 0.
                                                                            x = -1.5 or x = 0.3
   14S) Factorise and solve the following equations:                     a) (x + 2)(x + 6) = 0
        a) x2 + 8x + 12 = 0                                                 x = -2 or x = -6
                                                                         b) (x + 8)(x – 5) = 0
        b) x2 + 3x – 40 = 0                                                 x = -8 or x = 5
        c) x2 – 4x + 3 = 0                                               c) (x – 1)(x – 3) = 0
                                                                            x = 1 or x = 3
        d) 10x2 + x – 3 = 0                                              d) (5x + 3)(2x – 1) = 0
                                                                            x = -0.6 or x = 0.5
Page 48          ©MathsWatch       www.mathswatch.com        mathswatch@aol.co.uk               Page 48
Page 49                mathswatch@aol.co.uk     www.mathswatch.com     ©MathsWatch              Page 49
                                                6      5      4       3       2       1        O
                                            x
                                                                                                1
6    5   4      3      2       1        O
                                        1                                                       2
              876543210987654321        2
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
                                                                                                3
              876543210987654321
              876543210987654321
              876543210987654321        3
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
              876543210987654321
                                        4
              876543210987654321
                                                                                                4
              876543210987654321
              876543210987654321
                                        5
                                        6
                                                                                                5
                                                                                                6
                                                       y
                                                         y< 2        y< x+1           y < 3x – 6
                                                     show the region R that satisfies the inequalities
                                                15S) On the grid, draw straight lines and use shading to
                                                            Grade B Clip 144
                                                6      5      4       3       2       1        O
                                            x
                                                                                                1
6    5   4      3      2      1         O
                                        1
                                                                                                2
                                        2
                                                                                                3
                                        3
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321   4
                109876543210987654321
                109876543210987654321
                                                                                                4
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321
                109876543210987654321   5
                109876543210987654321
                                        6
                                                                                                5
                                                                                                6
                                                       y
                                                         y< 3        y < 2x + 3        x+y < 6
                                                     show the region R that satisfies the inequalities
                                                15T) On the grid, draw straight lines and use shading to
16T) A and B are two geometrically similar solids.                 57914.92cm3
        The total surface area of shape A is 3200cm2
        The total surface area of shape B is 16928cm2
        The volume of shape A is 4760cm3
        Calculate the volume of shape B.
                      Grade B Clip 149
   16S) C and D are two geometrically similar solids.                 38.4cm2
        The volume of shape C is 17cm3
        The volume of shape D is 136cm3
        The total surface area of shape C is 9.6cm2
        Calculate the total surface area of shape D.
   17T) A, B and C are all towns.
        A is 7.8km due east of B.                                     147.0°
        B is 12km due south of C.
        Calculate the bearing of A from C.
        Give your answer correct to 1 decimal place.
                      Grade B Clip 148
   17S) A, B and C are all towns.
        B is due south of A.
        C is 18km due east of B and on a bearing of
        152° from A.
        Calculate the distance between A and B.                       33.9km
        Give your answer correct to 1 decimal place.

   18T) a)     Factorise    (i)      x2 – 64                          a) (i)       (x – 8)(x + 8)
                            (ii)     25y2 – 36                           (ii)      (5y – 6)(5y + 6)

          b)   Simplify   4a2 – 49b2                                        2a – 7b
                                                                      b)
                          6a + 21b                                             3
                       2
          c)   Solve 9x = 100                                         c) (3x – .
                                                                               10)(3x + 10).= 0
                                                                         x = 3.3 or x = -3.3
                      Grade B Clip 141
   18S) a)     Factorise    (i)      x2 – 36                          a) (i)       (x – 6)(x + 6)
                            (ii)     4y2 – 9                             (ii)      (2y – 3)(2y + 3)

          b)   Simplify   4a2 – b2                                          2a + b
                                                                      b)
                          8a – 4b                                              4
                        2
          c)   Solve 16x – 25 = 0                                     c) (4x – 5)(4x + 5) = 0
                                                                         x = 1.25 or x = -1.25
   19T) Work out the following, giving your answer in
        standard form.                   Grade B
        (7 × 106) × (9 × 104)                                         6.3 × 1011
                                               Clip 135
   19S) Work out the following, giving your answer in
        standard form.
        (8 × 108) ÷ (4 × 105)                                         2 × 103

Page 50         ©MathsWatch        www.mathswatch.com     mathswatch@aol.co.uk            Page 50
20T) a)       Complete this table of values for                               a)
                   y = x3 + x – 2                                                       x –2 –1 0        1       2
                                                                                        y –12 -4 -2      0       8
               x        –2      –1        0     1           2

               y        –12
                                                                                   b)
                                                                                                 8                   x
                                                        3
          b)       On the grid, draw the graph of y = x + x – 2                                  6

                                      y                                                          4

                                                                                                 2
                                 8
                                                                                                             x
                                                                              -2          -1     O           1       2
                                                                                                 -2 x
                                 6
                                                                                          x      -4

                                                                                                 -6
                                 4
                                                                                                 -8

                                                                                                -10
                                 2
                                                                              x                 -12


                                                                          x
-2                 -1            O                  1                2
                                -2

                                -4

                                -6

                                -8

                              -10

                              -12


          c)       Use the graph to find the value of x when y = 2                 c) x = 1.4


                         Grade B Clip 145




Page 51             ©MathsWatch        www.mathswatch.com         mathswatch@aol.co.uk                  Page 51
20S) a)         Complete this table of values for                            a)
                   y = x3 – 3x                                                       x   –2 –1          0    1       2
                                                                                     y   -2    2        0   -2       2
               x          –2    –1         0     1         2

               y
                                                                                b)
                                                                                          x        2                     x
                                                       3
          b)       On the grid, draw the graph of y = x – 3x
                                         y                                                         1

                                     2
                                                                                                   O
                                                                                                        x
                                                                                -2        -1                     1       2


                                                                                                   -1


                                     1
                                                                                x                  -2            x




                                                                            x
 -2                  -1              O                 1               2


                                     -1




                                     -2

          c)       Use the graph to find the three values of x when y = 1       c) x = -1.7 or -0.25 or 1.95




Page 52             ©MathsWatch           www.mathswatch.com    mathswatch@aol.co.uk                        Page 52
21T) a)     A straight line is parallel to y = 3x – 1 and goes               a) y = 3x + 4
               through (1, 7).
               What is its equation?
          b)   A straight line goes through points (1, 5) and (3, 13).          b) y = 4x + 1
               What is its equation?
                              Grade B Clip 143
   21S) a)     A straight line is parallel to y = 5x – 3 and goes               a) y = 5x + 2
               through (3, 17).
               What is its equation?
          b)   A straight line goes through points (1, 5) and (3, 3).           b) y = 6 – x
               What is its equation?

   22T) Sketch the graphs of
        a) y = x2                      b)   y = x3
        c) y = 2x + 4                  d)   y = -x3
                              Grade B Clip 146
   22S) Sketch the graphs of
                                                1
        a) y = -x2                     b)   y= x
        c) y = 3x – 6                  d)   y = x2 – 4
                    y = x2
     a)                                b)                y = x3




                y = 2x + 4
     c)             4                  d)                    y = -x3




                    y = -x2
     a)                                b)                            1
                                                                  y= x




               y = 3x – 6

     c)                                d)                          y = x2 – 4




               -6

Page 53             ©MathsWatch       www.mathswatch.com           mathswatch@aol.co.uk         Page 53
Page 54   ©MathsWatch   www.mathswatch.com   mathswatch@aol.co.uk   Page 54
26 Essential Questions at grade A/A*
          (A calculator can be used on all questions unless told otherwise)
                          y
  1T)
                                                                  Grade A/A*
                                                                   Clip 167
                                       (2, 1)
                                         ×         y = f(x)

                                                                  x
                           0

          The diagram shows part of the curve with equation y = f(x).
          The coordinates of the maximum point of this curve are (2, 1).
          Write down the coordinates of the maximum point of the curve
          with equation
          a)    y = f(x) + 3                                                        a)   (2, 4)
          b) y = f(x) – 1                                                           b)   (2, 0)
          c) y = f(x – 3)                                                           c)   (5, 1)
          d) y = 2f(x)                                                              d)   (2, 2)
          e) y = f(½x)                                                              e)   (4, 1)



  1S)                 y

                                        y = f(x)




                                                              x
                       0


                           × (1, -4)

          The diagram shows part of the curve with equation y = f(x).
          The coordinates of the minimum point of this curve are (1, -4).
          Write down the coordinates of the minimum point of the curve
          with equation
          a)    y = ½f(x)                                                           a)   (1, -2)
          b) y = f(2x)                                                              b)   (0.5, -4)
          c) y = f(x + 5)                                                           c)   (-4, -4)
          d) y = f(x) + 4                                                           d)   (1, 0)
          e) y = 3f(x)                                                              e)   (1, -12)



Page 55          ©MathsWatch             www.mathswatch.com           mathswatch@aol.co.uk           Page 55
2T) For each triangle find the side or angle marked with
        the letter x.
        Give your answer correct to 1 decimal place.

        a)                            Grade A/A*      b)
                                                                             66 cm
              x                        Clip 173      94 cm                                a) 6.3 cm
                               8 cm
                                                                           68°
              56°
                                                                                          b) 40.6°
                                                        x
                                 41°                                                      c) 11.7 cm
                                                                                          d) 57.1°
        c)                                            d)      6 cm

                                      9 cm                                  7 cm
         5 cm       110°
                                                                      x
                                                           5 cm
                           x

    2S) For each triangle find the side or angle marked with
        the letter x.
        Give your answer correct to 1 decimal place.

                                                                  62°            67°
        a)            x                               b)
                                 10 m                                                     a) 78.5°
             12 m
                                                              x                           b) 5.2 cm
                                                                                   5 cm
                                                                                          c) 10.0 cm
                      14m
                                                                                          d) 49.5°
        c)                                            d)*
                               8 cm                                       7 cm
                                                                  x
              98°                                                            95°
 5 cm

                           x
                                                                  12 cm




                                                   *A tricky sine rule question.

    3T) Solve 3x2 + 7x – 12 = 0
        Give your solutions correct to 2 decimal places.                                  x = 1.15 or x = -3.48

    3S) Solve 2x2 – 5x + 1 = 0
        Give your solutions correct to 2 decimal places.                                  x = 2.28 or x = 0.22

                    Grade A/A* Clip 161

Page 56             ©MathsWatch              www.mathswatch.com            mathswatch@aol.co.uk            Page 56
4T) q is inversely proportional to the square of t.
        When t = 5, q = 9.6
        a) Find a formula for q in terms of t.                           a) q = 240
                                                                                  t2
        b) Calculate the value of q when t = 8.                          b) q = 3.75
        c) When q = 2.4, calculate the value of t.                       c) t = 10
    4S) The distance d through which a body falls from rest is
        proportional to the square of the time taken, t.
        The body falls 45m in 3 seconds.
        a) Find a formula for d in terms of t.                           a) d = 5t2
        b) How far will the body fall in 6 seconds?                      b) d = 180 m
        c) How long will the body take to fall 20m?                      c) t = 2 seconds
               Grade A/A* Clip 159
    5T)                 y


                                          (3, 200)


                                                         Grade A/A*
                              (1, 8)
                                                          Clip 170
                                                     x
                    0

          The sketch shows a curve with function y = kax                 a=5
          where k and a are constants and a > 0.                         k = 1.6
          The curve passes through points (1, 8) and (3, 200).
          Calculate the value of k and the value of a.

    5S)                 y


                                          (4, 192)




                              (1, 3)

                                                     x
                    0

          The sketch shows a curve with function y = kax                 a=4
          where k and a are constants and a > 0.                         k = 0.75
          The curve passes through points (1, 3) and (4, 192).
          Calculate the value of k and the value of a.

Page 57         ©MathsWatch        www.mathswatch.com      mathswatch@aol.co.uk             Page 57
Page 58                                  mathswatch@aol.co.uk            www.mathswatch.com        ©MathsWatch          Page 58
                                                                                                                  -5
                                                                                                                  -4
                                                                                                                  -3
                                        -5
                                                                                                                  -2
                                        -4
                                        -3
                                            3210987654321
                                            3210987654321                                                         -1
                                            3210987654321
                                            3210987654321
                                        -2  3210987654321
                                            3210987654321
                                            3210987654321
                                            3210987654321
                                                                                  5    4        3        2   1         -1   -2   -3   -4    -5
                                            3210987654321
                                                                                                                 O
                                        -1  3210987654321
                                            3210987654321
                                            3210987654321
                                                                              x
5       4       3       2       1           3210987654321
                                                 -1    -2    -3    -4    -5
                                        O   3210987654321
                                            3210987654321
                                            3210987654321
                                            3210987654321
                                            3210987654321
                                            3210987654321
                                        1   3210987654321
                                            3210987654321
                                                                                                                  1
                                            3210987654321
                                            3210987654321
                                            3210987654321
                        ×               2   3210987654321
        654321
        654321
            B                               3210987654321
        654321
        654321
        654321                                                                         10987654321
                                        3
                                                                                                         ×        2
        654321                                                                         10987654321
        654321                                                                         10987654321
        654321
        654321                                                                         10987654321
                                                                                       10987654321
                                                                                            B
        654321
        654321
                                        4                                              10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                                                  3
                                        5                                              10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                       10987654321
                                                                                                                  4
                                                                                                                  5
                                                                                                                   y
                                                                                      6S) Enlarge triangle B by scale factor -2½, centre (2, 2)
                                                                                                Grade A/A* Clip 171
                                                                                                                  -5
                                                                                                                  -4
                                                                                                                  -3
                                                                                                                  -2
                                            -5
                                                              87654321
                                            -4                87654321
                                                              87654321
                                                              87654321
                                                              87654321
                                                                                                                  -1
                                                              87654321
                                            -3                87654321
                                                              87654321
                                                              87654321
                                                              87654321
                                                              87654321
                                                                                  5    4        3        2   1         -1   -2   -3   -4    -5
                                            -2                87654321
                                                                                                                 O
                                                              87654321
                                                              87654321
                                                              87654321
                                                                              x
                                            -1
    5       4       3       2       1   O         -1    -2    -3   -4    -5
                                                                                                                  1
                                                                                                0987654321
                                                                                                0987654321
                    54321                   1                                                   0987654321
                    54321                                                                       0987654321
                    54321                                                                       0987654321
                                                                                                0987654321
                        A                                                                            A
                    54321                                                                       0987654321
                    54321                   2                                                   0987654321
                    54321
                    54321                                                                       0987654321        2
                    54321                                                                       0987654321
                    54321                                                                       0987654321
                    54321                                                                       0987654321
                    54321
                                            3                                                   0987654321
                                                                                                0987654321
                                                                                                0987654321
                                                                                                0987654321
                                                                                                0987654321
                                            4                                                   0987654321
                                                                                                0987654321
                                                                                                                  3
                                            5
                                                                                                                  4
                                                                                                                  5
                                                                                                                   y
                                                                                      6T) Enlarge triangle A by scale factor -1½, centre (0, 0)
7T) The maximum load a van can safely carry is 1800kg.
        Fred transports metal bars in the van.
        Each bar weighs 90kg.                                              1750 ÷ 95 = 18.42
        Fred knows that the 1800 is rounded correct to                     Greatest number
        2 significant figures and 90 is rounded correct to                 of bars = 18
        1 significant figure.
        Calculate the greatest number of bars that Fred can
        safely carry in the van. Show all workings.
                Grade A/A* Clip 160
    7S)                         10.6 m
           5432121098765432109876543210987654321
           5
           5432121098765432109876543210987654321
             432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
                                 6.8 m
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
                                         2.6 m
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321     4.8 m
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321
           5432121098765432109876543210987654321

          All measurements are rounded correct to 1 decimal place.         a) 51.6525 – 17.2125
                                                                              = 34.44 m2
          a) Find the largest possible value of the shaded area.
                                                                           b) 50.1125 – 18.1525
          b) Find the least possible value of the shaded area.                = 31.96 m2

    8T) Calculate the area of triangle ABC.
        Give your answer correct to 1 decimal place.
                                                                           Area = 65.5 cm2
                                     A

                      9 cm               104°
                                                     15 cm

            B
                                                                  C
    8S) Calculate the area of triangle ABC.
        Give your answer correct to 1 decimal place.
                          A                                                Area = 112.8 cm2



                12.6 cm


                          78°
                  B                                               C
                                           18.3 cm

                   Grade A/A* Clip 176

Page 59          ©MathsWatch         www.mathswatch.com      mathswatch@aol.co.uk            Page 59
9T) Simplify fully

               x2 + 3x – 10                     Grade A/A*            a) x + 5
          a)                                                             x–4
                x2 – 6x + 8                      Clip 163                   7(x + 1)
                                                                      b)
                 4     3                                                 (x + 5)(x – 2)
          b)    x+5 + x–2
                                                                      c) 5(x – 2) = (2 – 3x)(x + 3)
          c)   Show that the equation       5    2 – 3x
                                           x+3 = x–2                     5x – 10 = 2x + 6 – 3x2 – 9x
                                                                         5x – 10 – 2x – 6 + 3x2 + 9x = 0
               can be rearranged to give    3x2 + 12x – 16 = 0           3x2 + 12x – 16 = 0
    9S) Simplify fully

               x2 + 7x + 12                                           a) x + 3
          a)                                                             x–7
               x2 – 3x – 28                                                 9(x + 1)
                                                                      b)
                 7     2                                                 (x – 6)(x + 3)
          b)    x–6 + x+3
                                                                      c) (4 – x)(x + 4) = 3(x – 5)
          c)   Show that the equation      4–x    3
                                           x–5 = x+4                     4x + 16 – x2 – 4x = 3x – 15
                                                                         0 = 3x – 15 – 4x – 16 + x2 + 4x
               can be rearranged to give    x2 + 3x – 31 = 0             x2 + 3x – 31 = 0
  10T) a)      Rationalise the denominator of    1                    a)   5
                                                 5                         5
          b)   Expand (2 + 5 )(1 + 5 )                                b) 7 + 3 5
               Give your answer in the form a + b 5 , where
               a and b are integers.

               Grade A/A* Clip 157/158
   10S) a)     Rationalise the denominator of    1                    a)   7
                                                 7                         7

          b)   Expand and simplify ( 7 – 2 )( 7 + 2 )                 b) 5

   11T) Emma has 4 blue pens and 3 red pens in a pencil case.
        She picks a pen at random, notes its colour and then
                                                                           252
        replaces it. She does this two more times.                         343
        Work out the probability that when Emma takes three
        pens, exactly two are the same colour.
                  Grade A/A* Clip 182
   11S) A box contains toffees covered in either milk, plain or
        white chocolate. The probability of each is 0.2, 0.5
        and 0.3 respectively.
                                                                           0.42
        Tony chooses a chocolate, notes the type of chocolate
        and replaces it. He then chooses again.
        What is the probability he chooses exactly one white
        chocolate toffee?

Page 60          ©MathsWatch      www.mathswatch.com       mathswatch@aol.co.uk           Page 60
A
  12T)          a                                     OAB is a triangle.
               R                                      B is the midpoint of OT.
                             S                        S is the midpoint of AB.
          2a
                                                      OR = 2a RA = a OB = b
          O             b            B            T
     a) Find, in terms of a and b, the vectors
                                                                                  a) (i) –3a + b
          (i) AB,
                                                                                     (ii) –2a + 2b
          (ii) RT,
                                                                                     (iii) – ½a + ½b
          (iii) RS
                                                                                  b) RS = ½(–a + b)
     b) Explain why RST is a straight line.                                          RT = 2(–a + b)
                                                                                     RT = 4RS so RS is parallel
          The length of RS is 4 cm.
                                                                                     to RT from the same point.
     c) Find the length of RT.                                                       So RST is a straight line.

                    Grade A/A* Clip 180                                           c) 16 cm
   12S)                                   N
                                 P                         Q



                        p
                                                      M




               O                 r            R

          OPQR is a parallelogram.
          M is the midpoint of RQ.
          N is the midpoint of PQ.
          OP = p            OR = r
                                                                                  a) (i) ½p
          a)    Find, in terms of p and/or q, the vectors
                                                                                     (ii) ½p – ½r
                (i) MQ
                                                                                 b) RP = p – r
                (ii) MN
                                                                                      MN = ½p – ½r = ½(p – r)
          b)    Show that RP is parallel to MN                                        So RP is parallel to MN
                                                                                           ..
                                          . . 15                                 Let x = 0.45
                                                                                            ..
  13T) Prove that the recurring decimal 0.45 = 33                                100x = 45.45
                                                                                 99x = 45
                                           .. 4                                  x = 45 = 15
                                                                                     99   33
   13S) Prove that the recurring decimal 0.36 = 11                                         ..
                                                                                 Let x = 0.36
                                                                                            ..
                    Grade A/A* Clip 155                                          100x = 36.36
                                                                                 99x = 36
                                                                                 x = 36 = 4
                                                                                     99    11

Page 61             ©MathsWatch          www.mathswatch.com         mathswatch@aol.co.uk             Page 61
14T) Here is the graph of y = sin x, where 0º < x < 360°
               y
           1
                                                             Grade A/A*
               0                    360° x
                                                              Clip 169
          –1


     What are the equations of these three graphs?
     Choose from y = sin 2x              a)
                     y = 2sin x             y                                          a) y = –sin x
                     y = -sin x           1
                                                                                       b) y = sin 2x
                     y = sin x + 2
                     y = sin ½x            0                                           c) y = sin ½x
                                                                          360° x
                     y = -2sin x
                                              –1

    b)                                        c)
     y                                             y
     1                                         1


     0                                         0
                                360° x                                    360° x

    –1                                         –1



   14S) Here is the graph of y = sin x, where 0º < x < 360°
               y
           1


               0                    360° x

          –1

             What are the equations of these three graphs?
             Choose from the same list as in 14T.
    a)     y                                 b) y                                      a) y = –2sin x
           2                                           2
                                                                                       b) y = 2sin x
           1                                           1
                                                                                       c) y = sin x + 2
           0                                           0                           x
                                   360° x                                   360°

          –1                                       –1

          –2                                       –2
                      c)    y
                           2

                           1

                           0
                                                           360° x

                           –1
Page 62            ©MathsWatch           www.mathswatch.com         mathswatch@aol.co.uk                  Page 62
15T) This unfinished table and histogram shows information
       about the takings per day in pounds (p) of a business
       which sells software.

          Takings in pounds (p)                 Frequency
                    0 < p < 400                    6
                  400 < p < 600                    5
                  600 < p < 800                    10
                  800 < p < 1000                                                        800 < p < 1000                  7
                 1000 < p < 1400                                                       1000 < p < 1400                  8


 Frequency
  density




                                                                                   0    200   400   600   800    1000   1200   1400




             0        200      400        600     800        1000   1200    1400
                                     Takings in pounds (p)

          a) Use the information in the histogram to complete
             the table.
          b) Use the information in the table to complete
             the histogram.

                            Grade A/A* Clip 181




Page 63              ©MathsWatch          www.mathswatch.com        mathswatch@aol.co.uk                        Page 63
15S) This histogram gives information about the paintings
          sold in a shop one Saturday.
Frequency 20
 density
            16

            12

             8

             4

             0
                 0    5       10    15   20   25   30    35        40
                              Price (P) in pounds (£)
             a)      Use the histogram to complete the table.

                      Price (p) in pounds (£)           Frequency
                                   0<p<5                                                   0<p<5              40
                               5 < p < 10                                                  5 < p < 10         80
                              10 < p < 20                                                 10 < p < 20         56
                              20 < p < 40                                                 20 < p < 40         32

             This table gives information about the paintings
             sold in another shop on the same Saturday.

                      Price (p) in pounds (£)           Frequency
                                   0<p<5                  100
                               5 < p < 10                     40
                              10 < p < 20                     24
                              20 < p < 40                     96

             b)      Draw a histogram to represent this information.
Frequency   20
 density

            16

            12

             8

             4                                                                        0    5   10   15   20   25   30   35   40



             0
                 0        5    10 15 20 25 30                      35     40
                                Price (p) in pounds (£)
 Page 64               ©MathsWatch          www.mathswatch.com          mathswatch@aol.co.uk                  Page 64
16T) A college has 450 students.
       Each student studies one of German, French,
       Spanish or Italian.
       This table shows how many students study each
       of these languages.
                Language           Number of students
                  German                     38                             German         7
                  French                    143                             French         25
                  Spanish                    76                             Spanish        14
                  Italian                   193                             Italian        34

          An inspector wants to look at the work of a stratified
          sample of 80 of these students.
          Find the number of students studying each language that
          should be in the sample.

                 Grade A/A* Clip 183
   16S) The table shows the number of boys and girls in each
        year group of a secondary school.

              Year group      No. of boys     No. of girls
                   7              105              66                       Yr 7       7
                   8              148             112                       Yr 8      11
                   9               94              90                       Yr 9       9
                   10              63              48                       Yr 10      5
                   11              90             184                      Yr 11 18
                 Total            500             500

          James wants to take a stratified sample of 50 girls by
          year group.
          Work out the number of girls in each year group that
          should be in his sample.

  17T) Make x the subject of
                                                                                      4y + 24
              4(x – 6) = y(4 – 3x)                                            x=
                                                                                       4 + 3y
   17S) Make x the subject of the formula
                x      m                                                              2mt
                     =                                                         x=
              x + 2t   n                                                              n–m

                Grade A/A* Clip 164

Page 65         ©MathsWatch          www.mathswatch.com      mathswatch@aol.co.uk               Page 65
18T)
               A                             B


               10 cm                   10 cm              Grade A/A*
                             60°
                                                           Clip 178
                              O

          OAB is a sector of a circle, centre O
          a)       Work out the length of the arc AB                        a) Arc = 10.5 cm
                   Give your answer to 1 decimal place.
          b)       Work out the area of sector AOB.                         b) Sector = 52.4 cm2
                   Give your answer to 1 decimal place.

   18S)



               A                                         B
                                   115°
                   18 cm                         18 cm

                                   O
          OAB is a sector of a circle, centre O
          a)       Work out the length of the arc AB                        a) Arc = 36.1 cm
                   Give your answer to 1 decimal place.
          b)       Work out the area of sector AOB.                         b) Sector = 325.2 cm2
                   Give your answer to 1 decimal place.

                                                                            x2 + (x – 2)2 = 20
  19T) By eliminating y, find the solutions to the simultaneous
                                                                            x2 + x2 – 4x + 4 = 20
       equations
                                                                            2x2 – 4x – 16 = 0
                            x2 + y2 = 20                                    x2 – 2x – 8 = 0
                            y=x–2                                           (x – 4)(x + 2) = 0
                                                                            x = 4 and y = 2
                     Grade A/A* Clip 165                                    x = -2 and y = -4
  19S) By eliminating y, find the solutions to the simultaneous
                                                                            x2 + (x + 1)2 = 13
       equations
                                                                            x2 + x2 + 2x + 1 = 13
                       y=x+1
                                                                            2x2 + 2x – 12 = 0
                              x2 + y2 = 13                                  x2 + x – 6 = 0
                                                                            (x + 3)(x – 2) = 0
                                                                            x = -3 and y = -2
                                                                            x = 2 and y = 3

Page 66             ©MathsWatch        www.mathswatch.com     mathswatch@aol.co.uk             Page 66
Non calculator question
  20T) Here is the graph of y = sin x°, where 0 < x < 360°
             y
            1
                                                                Grade A/A*
             0                             360° x
                                                                 Clip 168
            –1


                      Given that sin 30° = 1 , write down the value of
                                           2

                      (a) sin 150°                                                        a) sin 150º = ½
                      (b) sin 330°                                                        b) sin 330° = -½

   Non calculator question
   20S) Here is the graph of y = cos x°, where 0 < x < 360°


        y


    1



  0.5




    O                                                                                                x
                 30     60    90     120     150    180   210    240   270   300   330   360   390




 -0.5




   -1



                      Use the graph to find estimates of the solutions,
                      in the interval 0 < x < 360, of the equations
                      (a) cos x° = –0.3                                                   a) 108°, 252°
                      (b) 4cos x° = 3                                                     b) 42°, 318°




Page 67                 ©MathsWatch           www.mathswatch.com         mathswatch@aol.co.uk               Page 67
21T) Given that x2 + 8x – 2 = (x + p)2 + q for all values of x,
           a)    find the value of p and the value of q.                    p = 4, q = -18

           b)    on the axes, draw a sketch of the graph
                 y = x2 + 8x – 2
                                 y                                                               y
                                                            Grade A/A*
                                                             Clip 162

                                                      x                                                            x
                             O                                                         -4




                                                                                                 -18



   21S) Given that x2 – 4x – 5 = (x – p)2 + q for all values of x,
           a)    find the value of p and the value of q.                    p = 2, q = -9

           b)    on the axes, draw a sketch of the graph
                 y = x2 – 4x – 5
                                 y                                                               y




                                                      x                                                            x
                             O                                                                       2

                                                                                            -9




   Non calculator question
  22T) Write down the value of a) 70                                        a) 1
                                       b) 4–2
                                                          Grade A/A*              1
                                                                            b)
                                              2            Clip 156              16
                                       c) 8   3
                                                                            c) 4
   Non calculator question
   22S) Write down the value of a) 120                                      a) 1
                                       b) 5–3                               b)    1
                                                  3
                                                                                 125
                                       c) 81      4
                                                                            c) 27



Page 68            ©MathsWatch        www.mathswatch.com      mathswatch@aol.co.uk                       Page 68
23T)
               y                                  Diagram NOT
                                                  accurately drawn
                                     × B (6, 7)


                                                         Grade A/A*
               × A (0, 5)
                                                          Clip 166
               0                                    x

          The equation of the straight line through A and B is
                                                       1
                                                   y= 3x+5
          a)       Write down the equation of another straight line           a) y = 1 x + any number
                                                                                     3
                                           1
                   that is parallel to y = 3 x + 5                               eg y = 1 x + 9
                                                                                         3
          b)       Write down the equation of another straight line           b) y = anything x + 5
                   that passes through the point (0, 5).                         eg y = 4x + 5
          c)       Find the equation of the line perpendicular to AB          c) y = –3x + 25
                   passing through B.

   23S)
               y                                  Diagram NOT
                                                  accurately drawn
                                     × B (8, 8)



               × A (0, 4)


               0                                    x

          The equation of the straight line through A and B is
                                                           1
                                                        y= 2x+4
          a)       Write down the equation of another straight line           a) y = 1 x + any number
                                                                                     2
                                           1
                   that is parallel to y = 2 x + 4                               eg y = 1 x + 9
                                                                                         2
          b)       Write down the equation of another straight line           b) y = anything x + 4
                   that passes through the point (0, 4).                         eg y = 7x + 4
          c)       Find the equation of the line perpendicular to AB          c) y = –2x + 24
                   passing through B.




Page 69              ©MathsWatch       www.mathswatch.com       mathswatch@aol.co.uk            Page 69
24T)                      H                                G


           E                                          F

                                        16 cm
                            D                                 C

                                                            8 cm

           A                    9 cm                 B


          This is a cuboid, ABCDEFGH
          AB = 9 cm,     BC = 8 cm,     AG = 16 cm
          a)   Calculate the length AE.                                     a) 10.5 cm
               Give your answer to 3 significant figures.
          b)   Work out the angle between CE and the horizontal             b) 41º
               plane ABCD.
               Give your answer to 2 significant figures.

           Grade A/A* Clips 174 and 175
   24S)                     X



                                                  12 cm

                     D                      C


                            M           9 cm


          A          9 cm        B

          The diagram shows a square-based pyramid ABCDX.
          AB = BC = 9 cm.
          The point M is the centre of the square base.
          XM = 12 cm.
          a)   Calculate the length of AC.                                  a) 12.7 cm
               Give your answer to 3 significant figures.
          b)   Work out the angle between the edge AX and the               b) 62.1º
               horizontal plane ABCD.
               Give your answer to 1 decimal place.



Page 70          ©MathsWatch         www.mathswatch.com      mathswatch@aol.co.uk        Page 70
25T)

                        8 cm




          This is a sphere with radius 8 cm.
          a)   Find the volume of the sphere.                               a) V = 2140 cm3
               Give your answer to 3 significant figures.
          b)   Find the surface area of the sphere.                         b) SA = 804 cm2
               Give your answer to 3 significant figures.

                  Grade A/A* Clip 177
   25S)



                                      13 cm




                          4 cm




          This is a cone with radius 4 cm and height 13 cm.
          a)   Find the volume of the cone.                                 a) V = 218 cm3
               Give your answer to 3 significant figures.
          b)   Find the curved surface area of the cone.                    b) SA = 171 cm2
               Give your answer to 3 significant figures.

  26T) Find the equation of the circle with centre (0, 0) and                x2 + y2 = 36
       radius 6 cm.
                  Grade A/A* Clip 172
   26S) Find the equation of the circle with centre (0, 0) and               x2 + y2 = 100
        radius 10 cm.




Page 71          ©MathsWatch       www.mathswatch.com         mathswatch@aol.co.uk           Page 71
Page 72   ©MathsWatch   www.mathswatch.com   mathswatch@aol.co.uk   Page 72
Index
Symbols                                          E
3D-coordinates 31                                enlargements - negative scale factor 58
3D-Pythagoras 70                                 enlargements - positive scale factor 11
3D-trigonometry 70                               equations 14
                                                 equivalent fractions 29
A                                                estimate for the mean 9
algebraic fractions 60                           estimation 31
alternate angles 13                              evaluate with calculator 38
angles in triangle 13                            Evaluating numers with indices - simple 24
angles of polygons 12                            Expanding brackets 3
area of circle 36                                exponential functions 57
area of compound shapes 16
                                                 F
area of rectangle 16
area of sphere 71                                factorising - simple 5
area of triangle 16                              factorising quadratics 48
areas of triangles using sine 59                 factors, multiples and primes 24
                                                 foreign currency conversion 36
B                                                forming equations 12
bearings - calculation of 50                     forming expressions 12
bearings - finding with protractor 29            fraction of an amount 8
best value for money 37                          fractional and negative indices 68
bisect a line 7                                  fractions - algebraic 60
bisect an angle 7                                fractions - changing to decimal 34
BODMAS 7                                         fractions - four rules 15
bounds - difficult questions 59                  fractions - four rules, difficult 48
bounds at grade C level 5                        fractions - putting in order 34
box plots 41                                     fractions - simplifying 33
                                                 frequency diagrams 22
C                                                frequency polygons 22
change the subject of a formula 17               G
change the subject of formula - difficult 65
circle theorems 43, 44                           gradients of parallel and perpendicular lines 69
circles - area 36                                graph of trig functions 67
circles - circumference 37                       graphs - linear 21
circles and loci - equations 71                  graphs - recognising 53
circumference of circle 37                       graphs - transformations 55
completing the square 68                         graphs of cubics 51, 52
compound interest/depreciation 44                graphs of quadratics 19, 20
compound measures 39
                                                 H
compound shapes - area 16
cone - volume and surface area 71                hard calculator question 38
coordinates - 3D 31                              highest common factor 7
cosine rule 56                                   histograms 63, 64
cubes, squares and roots 34
cubics - drawing graphs of 51, 52                I
cumulative frequency 45, 46                      index notation - multiply and divide 25
curvy graphs 19, 20                              indices - fractional and negative 68
cylinder - volume of 38                          inequalities - integers 7
                                                 inequalities - shading regions 49
D
                                                 inequalities - solving 24
density, mass, volume 39                         inverse proportion 57
difference of two squares 50
dimensions 14                                    L
direct proportion 57                             linear graphs 21
directed numbers - four rules 30                 loci 23
                                                 long division 26
                                                 long multiplication 15
                                                 lower bounds 5
                                                 lowest common multiple 7
M                                               S
mean from a table 4                             scatter diagrams 24
measuring angles 26                             sectors of circles 66
median from a table 4                           similar 3D shapes 50
moving averages 47                              similar triangles 40
multiples 24                                    simplification of algebraic terms 3
multiplication of decimals 7                    simultaneous equations - solving graphically 30
                                                simultaneous equations involving a quadratic 66
N                                               simultaneous linear equations 41
negative indices 68                             sine rule 56
nets 32                                         solve quadratic equation with formula 56
nth term - finding from sequence 4              solving equations 14
nth term - generating a sequence from 26        speed, distance, time 39
                                                spheres - area and volume 71
O                                               squares, cubes and roots 34
outcomes - listing 28                           standard form 6
                                                standard form - calculation 50
P                                               stem and leaf diagrams 14
                                                straight lines - finding equation of 28
percentage increase/decrease 48
                                                stratified samples 65
percentages - change to % with calc. 38
                                                subject of a formula - simple 17
percentages - change to % without calc. 23
                                                substitution 6
percentages - find % with calc. 36
                                                surds 60
percentages - find % without calc. 17
                                                surface area 17
percentages - increase and reduction 26
                                                surface area of sphere 71
percentages - reverse 48
                                                symmetry - planes of 21
perimeter involving circles 37
pie charts 15                                   T
planes of symmetry 21
plans and elevations 8                          transformation of graphs 55
prime numbers 24                                transformation of trig functions 62
probability - experimental 21                   transformations 10
probability - mutually exclusive events 31      translations 27
probability AND/OR questions 60                 travel graph 18
product of prime factors 7                      tree diagrams 47
proportion - direct and inverse 57              trial and improvement 35
Pythagoras - in 2D 35                           triangles - drawing with compasses 7
Pythagoras - in 3D 70                           trig functions - graphs 67
Pythagoras - line on graph 39                   trig functions - transformations 62
                                                trigonometry - 2D 42
Q                                               trigonometry - 3D 70
                                                two-way tables 25
quadratic equations - solving with formula 56
quadratics - factorisation 48                   U
questionnaires 34
                                                upper bounds 5
R
                                                V
ratio - map scales 29
ratio - recipe questions 33                     value for money 37
ratio - sharing 9                               vectors 61
real-life money questions 36                    volume of cone 71
real-life number questions 15                   volume of cylinder 38
rearranging difficult formulae 65               volume of prism 25
recipes - ratio 33                              volume of sphere 71
recognising graphs 53                           Y
recurring decimals - changing to fraction 27
recurring decimals - from first principles 61   y = mx + c 53
reflections 10
reverse percentage 48
rotations 10

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Higherbookletanswers311 100604140327-phpapp01

  • 1. GCSE Mathematics ESSENTIAL REVISION QUESTIONS MathsWatch Higher Book with answers to all questions www.mathswatch.com enquiries to info@mathswatch.com
  • 2. CONTENTS Grades C/D......................................... 3 to 40 B............................................. 41 to 54 A/A* ...................................... 55 to 71
  • 3. 85 Essential Questions at C to D (1 to 72 are non-calculator) 1T) a) 4t + 7t Grade C a) 11t b) 4t × 7t b) 28t2 c) 6y + 2w – 5y Clip 102 c) y + 2w d) 6y × 3t d) 18yt or 18ty e) 4e2 × 3e3 e) 12e5 f) m7 ÷ m5 f) m2 y5 g) y3 g) y2 h) 3y3 6y 4 h) 2y 1S) a) 3t + 8t a) 11t b) 2t × 9t b) 18t2 c) 12y + 3w – 5y c) 7y + 3w d) 4y × 2t d) 8yt or 8ty e) 3e5 × 2e7 e) 6e12 f) x4 ÷ x3 f) x r7 g) r4 g) h) 3r2 r3 6r 5 h) 2r 3 2T) a) Expand 5(3y – 1) a) 15y – 5 b) Expand 3x(2x + 4) b) 6x2 + 12x c) Expand and simplify 2(3x + 5) – 3(4x – 2) c) –6x + 16 d) Expand and simplify 5(2y – 3) + 2(y – 1) d) 12y – 17 e) (2x + 3)(x – 4) e) 2x2 – 5x – 12 Grade C 2S) a) Expand 3(2y – 4) Clip 103 a) 6y – 12 b) Expand 5x(3x + 2) b) 15x2 + 10x c) Expand and simplify 5(2x + 1) – 2(3x – 4) c) 4x + 13 d) Expand and simplify 4(3y – 2) + 2(3y – 2) d) 18y – 12 e) (3x – 4)(2x – 1) e) 6x2 – 11x + 4 Page 3 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 3
  • 4. 3T) Find the nth term of the following patterns a) 3, 5, 7, 9, 11 . . . . . a) 2n + 1 Grade C b) 8, 13, 18, 23, 28, . . . . . Clip 112 b) 5n + 3 c) 9, 6, 3, 0, –3, . . . . . c) –3n + 12 3S) Find the nth term of the following patterns a) 2, 6, 10, 14, 18 . . . . . a) 4n – 2 b) 7, 16, 25, 34, 43, . . . . . b) 9n – 2 c) 5, 2, –1, –4, –7, . . . . . c) –3n + 8 4T) Number of Frequency smarties 29 2 30 5 31 2 32 1 a) From the table above, find the mean number of a) 30.2 smarties in a tube. b) 30 b) Find the median number of smarties in a tube. Grade C Clip 133 4S) Number of Frequency smarties 29 2 30 1 31 5 32 2 a) From the table above, find the mean number of a) 30.7 smarties in a tube. b) 31 b) Find the median number of smarties in a tube. Page 4 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 4
  • 5. 5T) Factorise the following: a) 2x + 6 a) 2(x + 3) b) 2x + 8 b) 2(x + 4) c) 2x + 12 Grade C c) 2(x + 6) d) 3x + 6 Clip 104 d) 3(x + 2) e) x2 + x e) x(x + 1) f) 2x2 – 6x f) 2x(x – 3) g) 3h(3h + 2) g) 9h2 + 6h h) 2x(4x – 5) h) 8x2 – 10x 5S) Factorise the following: a) 2t + 10 a) 2(t + 5) b) 3m – 12 b) 3(m – 4) c) 4y + 8 c) 4(y + 2) d) 2x2 + 6 d) 2(x2 + 3) e) t2 + t e) t(t + 1) f) 5t2 + 10t f) 5t(t + 2) g) 7t2 – 14t g) 7t(t – 2) h) 9h2 – 30h h) 3h(3h – 10) 6T) a) If a piece of wood is measured as 8cm to the a) Greatest is 8.5cm nearest cm, what is the greatest possible Least is 7.5cm length and the least possible length? b) Greatest is 19.85cm b) If a piece of wood is measured as 19.8cm to the nearest tenth of a cm, what is the greatest possible Least is 19.75cm length and the least possible length? Grade C Clip 125 6S) a) If a piece of wood is measured as 5cm to the a) Greatest is 5.5cm nearest cm, what is the greatest possible Least is 4.5cm length and the least possible length? b) If a piece of wood is measured as 6.7cm to the b) Greatest is 6.75cm nearest tenth of a cm, what is the greatest possible Least is 6.65cm length and the least possible length? Page 5 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 5
  • 6. 7T) a) If a = 3 and t = –2 find the value of (i) 3a a) (i) 9 (ii) a2 Grade D (ii) 9 (iii) 5a2 (iii) 45 (iv) 4a – 2t Clip 66 (iv) 16 (v) 2(3a + t) (v) 14 (vi) 2 (vi) 4a − t 7 b) Colin said “when x = 3, then the value of 4x2 is 144” b) Sue because 4x2 is 4 × x2 Sue said “when x = 3, then the value of 4x2 is 36” Who was right? Explain why. 7S) a) If a = 4 and t = –5 find the value of a) (i) 12 (i) 3a (ii) 16 (ii) a2 (iii) 80 (iii) 5a2 (iv) 26 (iv) 4a – 2t (v) 14 (v) 2(3a + t) (vi) 3 (vi) 4a − t 7 b) Colin said “when x = 5, then the value of 4x2 is 400” b) Sue because Sue said “when x = 5, then the value of 4x2 is 100” 4x2 is 4 × x2 Who was right? Explain why 8T) a) Write 2340000 in standard form. a) 2.34 × 106 b) Write 0.00042 in standard form. b) 4.2 × 10–4 c) Write 7.8 × 106 as a normal number. c) 7800000 d) Write 4.71 × 10–5 as a normal number. d) 0.0000471 Grade C Clip 97 8S) a) Write 630000000 in standard form. a) 6.3 × 108 b) Write 0.00000715 in standard form. b) 7.15 × 10–6 c) Write 9.17 × 105 as a normal number. c) 917000 d) Write 8.23 × 10–6 as a normal number. d) 0.00000823 Page 6 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 6
  • 7. 9T) Write the following numbers as the product of their prime factors a) 48 Grade C a) 2 × 2 × 2 × 2 × 3 b) 60 Clips 95 & 96 b) 2 × 2 × 3 × 5 c) Find the Highest Common Factor of 48 and 60 c) 12 d) Find the Lowest Common Multiple of 48 and 60 d) 240 9S) Write the following numbers as the product of their prime factors a) 90 a) 2 × 3 × 3 × 5 b) 120 b) 2 × 2 × 2 × 3 × 5 c) Find the Highest Common Factor of 90 and 120 c) 30 d) Find the Lowest Common Multiple of 90 and 120 d) 360 10T) a) Draw an angle of 70 degrees and then use ruler Grade C Clip 127 and compasses to bisect it. b) Draw a line of length 9cm and then bisect it Grade C Clip 129 using compasses. c) Use compasses to draw a triangle ABC with AB Grade D Clip 80 equal to 9cm, AC 7cm and BC 4cm 10S) a) Draw an angle of 60 degrees and then use ruler and compasses to bisect it. b) Draw a line of length 11cm and then bisect it using compasses. c) Use compasses to draw an isosceles triangle with the base equal to 8cm and the other two sides of length 12cm 11T) What is 2 × 5 + 7 × 3? Grade D 31 Clip 59 11S) Work out the answer to 38 – 3 × 4 26 12T) What is 2.3 × 0.15? 0.345 Grade D 12S) What is 2.7 × 0.13? 0.351 Clip 60 13T) –3 x < 4 Grade C Clip 108 x is an integer. Write down all the possible values. –3, –2, –1, 0, 1, 2, 3 13S) –2 x 3 x is an integer. Write down all the possible values. –2, –1, 0, 1, 2, 3 Page 7 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 7
  • 8. 14T) Here are the front elevation, side elevation and the plan of a 3-D shape. Draw a sketch of the 3-D shape. Grade D Front elevation Side elevation Clip 81 Plan 14S) Here are the front elevation, side elevation and the plan of a 3-D shape. Draw a sketch of the 3-D shape. Front elevation Side elevation Plan 3 of 600 15T) a) Work out 10 Grade D a) 180 b) Work out 5 of 800 8 Clip 55 b) 500 c) Work out 5 × 42 c) 30 7 15S) a) Work out 7 of 400 10 a) 280 b) Work out 2 of 900 9 b) 200 c) Work out 3 × 56 8 c) 21 Page 8 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 8
  • 9. 16T) If you share out £240 between Alice and Bill in the £60 ratio 5 : 3, how much more does Alice get compared with Bill? Grade C Clip 94 16S) If you share out £60 between Alice and Bill in the £24 for Alice and ratio 2 : 3, how much does each of them get? £36 for Bill 17T) Sara and Fred share tips from their job in the ratio £14 2 : 5. If Fred receives £35 how much does Sara get? Grade C Clip 94 17S) Sara and Fred share tips from their job in the ratio £24 3 : 4. If Sara receives £18 how much does Fred get? 18T) Some plant heights are measured as shown in the table, below. Height in cm Frequency 0 < h 20 4 20 < h 40 3 40 < h 60 2 60 < h 80 1 a) Find an estimate for the mean height of a plant. a) 30 b) In which interval does the median height lie? b) 20 < h 40 18S) Some plant heights are measured as shown in the table, below. Height in cm Frequency 0 < h 20 1 20 < h 40 2 40 < h 60 4 60 < h 80 3 a) Find an estimate for the mean height of a plant. a) 48 b) In which interval does the median height lie? b) 40 < h 60 Grade C Clip 133 Page 9 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 9
  • 10. Page 10 mathswatch@aol.co.uk www.mathswatch.com ©MathsWatch Page 10 Reflection in y = –x c) 210987654321 210987654321 210987654321 210987654321 210987654321 76543210987654321 210987654321 76543210987654321 210987654321 76543210987654321 210987654321 76543210987654321 210987654321 210987654321 76543210987654321 76543210987654321 210987654321 210987654321 T 76543210987654321 76543210987654321 U 210987654321 210987654321 76543210987654321 76543210987654321 210987654321 76543210987654321 210987654321 76543210987654321 move U back on to the shaded shape. Decribe fully the single transformation that will c) centre of rotation and label the new shape U Rotate T 90º clockwise using (0, 0) as the b) Reflect the shaded shape in the x axis and label it T 19S) a) Grade D Clips 74, 75, 77 Reflection in y = –x c) 76543210987654321 76543210987654321 76543210987654321 76543210987654321 76543210987654321 76543210987654321 76543210987654321 76543210987654321 U 76543210987654321 76543210987654321 76543210987654321 76543210987654321 210987654321 210987654321 210987654321 210987654321 210987654321 T 210987654321 210987654321 move U back on to the shaded shape. 210987654321 210987654321 210987654321 210987654321 210987654321 Decribe fully the single transformation that will c) 210987654321 210987654321 210987654321 210987654321 210987654321 centre of rotation and label the new shape U Rotate T 90º anticlockwise using (0, 0) as the b) Reflect the shaded shape in the y axis and label it T 19T) a)
  • 11. 20T) a) Enlarge triangle A scale factor 3 using (2, 4) as centre of enlargement b) Enlarge triangle A scale factor ½ using (4, 0) as centre of enlargement Grade D Clip 76 20S) a) Enlarge triangle A scale factor 2 using (4, 5) as centre of enlargement b) Enlarge triangle A scale factor ½ using (-2, 2) as centre of enlargement Page 11 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 11
  • 12. 21T) Find the exterior angle of this regular octagon 45 degrees Grade D Clip 70 21S) Find the exterior angle of this regular hexagon 60 degrees 22T) a) In the triangle below, find an expression, in terms a) 4x + 8 of x, for the perimeter of the triangle. Simplify your expression. b) x = 9 cm b) If the perimeter of the triangle 2x 2x is 44 cm, find the value of x. Grade C 8 Clip 106 22S) a) In the rectangle below, find an expression, in terms a) 8x + 6 of x, for the perimeter of the rectangle. Simplify your expression. b) x = 5 cm 3x + 5 x–2 b) If the perimeter of the rectangle is 46 cm, find the value of x. Page 12 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 12
  • 13. 23T) Find the size of angle n, giving reasons A ABC = 60°(angles on st. line = 180) n = 78° (angles in add B C Grade D up to 180) Clips 68, 69 23S) Find the size of angles x and y, giving reasons A x = 56° (angles in =180, base angles are equal) ABC = 56°(base angles of isos. are equal) y = 124° (angles on st. line = 180°) B C 24T) Find the size of angle x, giving reasons Grade D ° Clip 67 BRS = 30°(angles on straight line add up to 180°) ° x = 30° (alternate angles) 24S) Find the size of angles x and y, giving reasons x = 86° (angles in quadrilateral add up to 360°) y = 74° (alternate angles) Page 13 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 13
  • 14. 25T) Solve the following equations a) 2x = 7 a) 3.5 b) x – 8 = 4 c) 2x + 3 = 11 Grade C b) c) 12 4 d) x +5=7 Clip 105 d) 6 3 e) 3 e) 2(5x – 2) = 26 f) 5 2 x – 3 = –1 g) 3.5 f) 5 g) 3x + 4 = 5x – 3 25S) Solve the following equations a) 3x = 12 a) 4 b) x – 9 = 3 b) 12 c) 3x + 2 = 14 c) 4 x +6=4 d) –6 d) 3 e) 7 e) 2(3x + 2) = 46 f) 7.5 2 x – 6 = –3 g) –3 f) 5 g) 4x + 3 = 2x – 3 26T) Draw a stem and leaf diagram to show the following 3 4 6 information. 4 1 7 7 9 The heights of 12 plants in cm are: 5 1 2 2 8 3.6, 5.2, 4.1, 3.4, 5.8, 6.2, 4.7, 5.2, 6 2 4 4.7, 6.4, 5.1, 4.9 Key 4 | 1 means 4.1 Grade D Clip 89 26S) Draw a stem and leaf diagram to show the following 5 0 2 9 information. 6 2 4 7 8 The weights of 10 people in kg are: 7 1 5 59, 52, 81, 67, 75, 62, 50, 64, 68, 71 8 1 Key 6 | 2 means 62 27T) For each of the following, state whether it is a length, area, volume or none of them (a, b, m, q, r, x are lengths) mq p2 r r3 V A L V A A a 2b 2ab r ab(m + q) q x Grade C Clip 124 27S) For each of the following, state whether it is a length, area, volume or none of them (a, b, m, q, r, x are lengths) pqr r2 A V A V V L ab 2ab2 r2 + rx ab(m + q) 2 x Page 14 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 14
  • 15. 28T) a) Anne buys 46 litres of diesel at £1.32 per litre. a) £60.72 How much does she spend altogether on diesel? b) James spends £65.72 on 53 litres of petrol. b) £1.24 How much was each litre of petrol? Grade D Clip 60 28S) a) Sara buys 34 litres of diesel at £1.43 per litre. a) £48.62 How much does she spend altogether on diesel? b) Sid spends £57.12 on 42 litres of petrol. b) £1.36 How much was each litre of petrol? 2 3 1 1 29T) a) 3 + 8 a) 24 b) 3 1 5 – 4 Grade D b) 7 20 3 8 Clips 56 c) 2 c) × 9 3 4 and 57 d) 2 1 d) 4 3 ÷ 6 3 2 1 5 29S) a) 4 + 3 a) 12 5 2 11 b) 7 – 5 b) 35 c) 3 6 9 c) 10 × 8 40 d) 4 3 d) 22 5 ÷ 10 3 P 30T) Draw a pie chart to show the following information B C Plain Crisp flavour Frequency Cheese Cheese 80° 8 Plain 19 Grade D Plain 190° Beef Beef Prawn 6 3 Clip 86 Prawn 60° 30° 30S) Draw a pie chart to show the following information B P C Plain Crisp flavour Frequency Cheese 8 Cheese 160° Plain 6 Plain 120° Beef 1 Beef 20° Prawn 3 Prawn 60° Page 15 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 15
  • 16. 31T) Find the areas of the following shapes a) 7m b) a) 21m2 3m 4cm b) 10cm2 c) 160cm2 5cm c) 18cm 4cm 12cm 11cm Grade D Clip 73 31S) Find the areas of the following shapes a) b) a) 54m2 9m 6m 7cm b) 42cm2 c) 222cm2 12cm c) 24cm 4cm 13cm 14cm Page 16 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 16
  • 17. 32T) Find the surface area of this cuboid. 92cm2 Grade C 3cm Clip 121 2cm 8cm 32S) Find the surface area of this cuboid. 190cm2 5cm 3cm 10cm 33T) Make the letter in the bracket the subject of the formula. v-u a) v = u + at (a) Grade C a) a= t b) x – t = bc a (x) Clip 107 b) x = a(bc + t) 33S) Make the letter in the bracket the subject of the formula. v2 - u2 a) v2 = u2 + 2as (a) a) a= 2s b) x +y=c (x) a b) x = a(c – y) 34T) Find the following: a) 10% of £700 a) £70 b) 15% of £80 Grade D b) £12 c) 35% of £600 c) £210 d) 17.5% of £48 Clip 52 d) £8.40 34S) Find the following: a) 40% of £260 a) £104 b) 15% of £900 b) £135 c) 85% of £800 c) £680 d) 17.5% of £240 d) £42 Page 17 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 17
  • 18. 35T) Sally’s mother lives 80km from Sally. This is the journey to her mother’s house. a) 100km/h 100 b) 30 mins Distance in km from home c) 30km/h 80 60 40 20 0800 0900 1000 1100 1200 Time a) Sally has a rest at 8.30. What speed had she been travelling at until 8.30? b) How long did she rest for? c) What speed did she travel at for the last part of the journey to her mother’s house? d) For the return journey, Sally travelled at 60km/h without a break. Complete the travel graph to show this. Grade C Clip 117 35S) Sally’s mother lives 90km from Sally. This is the journey to her mother’s house. a) 120km/h b) 30km/h 100 Distance in km from home 80 60 40 20 0800 0900 1000 1100 1200 Time a) What speed did Sally travel at until her first rest? b) What speed did she travel at for the last part of the journey to her mother’s house? c) For the return journey, Sally travelled at 80km/h without a break. Complete the travel graph to show this. Page 18 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 18
  • 19. 36T) a) Complete the table for the equation y = 2x2 – 3x x –2 –1 0 1 2 3 Grade C –2 –1 0 1 2 3 y 14 Clip 116 14 5 0 –1 2 9 b) Draw the graph of y = 2x2 – 3x on the axes at the bottom of the page c) Use your graph to find the value of y c) 3.6 when x = 2.3 d) Use your graph to find the value of y d) 9 when x = –1.5 e) Use your graph to solve 2x2 – 3x = 5 e) x = –1 and x = 2.5 f) Use your graph to solve 2x2 – 3x = 8 f) x = –1.3 and x = 2.9 y 14 13 12 11 10 9 8 7 6 5 4 3 2 1 O x -2 -1 1 2 3 -1 -2 Page 19 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 19
  • 20. 36S) a) Complete the table for the equation y = 3x2 – x x –2 –1 0 1 2 Grade C –2 –1 0 1 2 y 14 Clip 116 14 4 0 2 10 b) Draw the graph of y = 3x2 – x on the axes at the bottom of the page c) Use your graph to find the value of y c) 5.3 when x = 1.5 d) Use your graph to find the value of y d) 8.25 when x = –1.5 e) Use your graph to solve 3x2 – x = 10 e) x = –1.7 and x = 2 y 14 13 12 11 10 9 8 7 6 5 4 3 2 1 O x -2 -1 1 2 3 -1 -2 Page 20 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 20
  • 21. 5 37T) Draw a set of axes going from –5 to +5 y = 3x + 1 4 3 a) Draw the graph of y = 2x – 3 b) What is the gradient? Grade C b) 2 2 1 37S) Draw a set of axes going from –5 to +5 Clip 113 -5 -4 -3 -2 -1 O -1 1 2 3 4 5 -2 a) Draw the graph of y = 3x + 1 y = 2x – 3 -3 b) What is the gradient? b) 3 -4 -5 38T) The table below shows the probability of an oddly shaped 4-sided dice landing on 1, 2, 3, or 4. a) Work out the value of x a) 0.24 b) If the dice is rolled 1000 times how many 2s b) 370 would you expect to get? 1 2 3 4 Grade C 0.15 0.37 0.24 x Clip 132 38S) The table below shows the probability of an oddly shaped 4-sided dice landing on 1, 2, 3, or 4. a) Work out the value of x a) 0.23 b) If the dice is rolled 1000 times how many 3s b) 140 would you expect to get? 1 2 3 4 0.29 0.34 0.14 x other answers 39T) Draw a plane of symmetry on this shape are possible Grade D Clip 83 39S) Draw a plane of symmetry on this shape other answers are possible Page 21 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 21
  • 22. 40T) Frequency Frequency Height Frequency 0 to 10 1 7 7 10 to 20 4 6 6 20 to 30 3 5 5 30 to 40 2 4 4 a) On the first set of axes, 3 3 draw a frequency diagram 2 2 b) On the second set of axes, draw a frequency polygon 1 1 0 0 0 10 20 30 40 50 0 10 20 30 40 50 Grade D Height Height Frequency Frequency Clip 88 7 7 6 6 5 5 ANSWERS for 40T 4 4 × 3 3 × 2 2 × 1 1 × 0 0 0 10 20 30 40 50 0 10 20 30 40 50 Height Height 40S) Frequency Frequency Height Frequency 0 to 10 3 7 7 10 to 20 7 6 6 20 to 30 2 5 5 30 to 40 1 4 4 a) On the first set of axes, 3 3 draw a frequency diagram 2 2 b) On the second set of axes, draw a frequency polygon 1 1 0 0 0 10 20 30 40 50 0 10 20 30 40 50 Height Height Frequency Frequency 7 7 × 6 6 5 5 ANSWERS for 40S 4 4 3 3 × 2 2 × 1 1 × 0 0 0 10 20 30 40 50 0 10 20 30 40 50 Height Height Page 22 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 22
  • 23. 41T) a) In a room there are 7 boys and 3 girls. a) 70% What percentage of the people are boys? b) 35% b) In a room there are 13 boys and 7 girls. What percentage of the people are girls? c) 60% c) Sally scores 24 marks out of 40 in a Science test. What was her percentage score? Grade D Clip 54 41S) a) In a room there are 11 boys and 9 girls. a) 55% What percentage of the people are boys? b) In a room there are 13 boys and 12 girls. b) 48% What percentage of the people are girls? c) 90% c) Emma scores 54 marks out of 60 in a Science test. What was her percentage score? 42T) A point, P, moves so that the locus of P is always 2 cm from the line AB. Draw the locus of P. Grade C Clip 130 B A 42S) A point, P, moves so that the locus of P is always equidistant from lines AB and AC. Draw the locus of P. B A C Page 23 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 23
  • 24. 43T) a) Sketch a scatter diagram with positive a) correlation × × × × × ×× ×× ‘hair length’, ‘hair colour’, ‘intelligence,’ ×× × ‘circumference of wrist’, ‘height’, ‘ice cream ×× sales’, ‘weight’, ‘outside temperature’ ‘sale of extra-warm jackets’, ‘eye colour’ b) (i) height and weight b) From the list above select two sets of data which would have or Ice cream sales and temp. (i) a positive correlation (ii) hair length and hair colour (ii) no correlation or hair colour and intelligence Grade D Clip 87 etc 43S) a) Sketch a scatter diagram with negative a) ×× correlation ×× × × × ‘hair length’, ‘hair colour’, ‘intelligence,’ ×× × ×× ‘circumference of wrist’, ‘height’, ‘ice cream × × sales’, ‘weight’, ‘outside temperature’ ‘sale of extra-warm jackets’, ‘eye colour’ b) From the list above select two sets of data which b) (i) temp. and sale of jackets would have (ii) eye colour and intelligence (i) a negative correlation or hair length and weight (ii) no correlation etc 44T) a) What are the first four multiples of 7? a) 7 14 21 28 b) Write down all the factors of 30. b) 1 2 3 5 6 10 15 30 c) What are the first six prime numbers? c) 2 3 5 7 11 13 44S) a) What are the first four multiples of 5? a) 5 10 15 20 b) Write down all the factors of 40. b) 1 2 4 5 8 10 20 40 c) Which two prime numbers come next, after 13? c) 17 19 Grade D Clip 44 45T) Solve the inequality 2x + 3 < 11 x<4 45S) Solve the inequality 5x – 7 > 43 x > 10 Grade C Clip 109 46T) Evaluate 53 125 Grade D Clip 45 16 46S) Evaluate 24 Page 24 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 24
  • 25. 47T) Find the volume of this triangular prism. Volume = 84cm3 6cm 7cm Grade C 4cm Clip 122 47S) Find the volume of this triangular prism. Volume = 160cm3 4cm m 10c 8cm 48T) a) Write as a power of 7 73 × 75 Grade C a) 78 b) Write as a power of 2 Clip 111 b) 26 28 ÷ 22 48S) a) Write as a power of 5 a) 57 52 × 54 × 5 b) Write as a power of 3 b) 35 39 ÷ 34 49T) Complete the two-way table which shows the favourite soup of 100 people. Oxtail Tomato Chicken Total Oxtail Tomato Chicken Total Male 25 42 Male 25 12 5 42 Female 18 11 Female 29 18 11 58 Total 54 30 16 100 Total 16 100 Grade D Clip 85 49S) 110 students studied History and Geography as shown in the two-way table. History Geography Both Total History Geography Both Total Female Female 11 12 35 58 Male 8 Male 4 8 40 52 Total 15 20 110 Total 15 20 75 110 40 males studied both subjects. 52 of the students were male. Complete the two-way table. Page 25 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 25
  • 26. 50T) Measure this angle. 48° 50S) Measure this angle. Grade D Clip 79 114° 51T) The price of a pair of shoes is £75. £82.50 How much are they after a price increase of 10%? 51S) A new car costs £8000. Grade C Clip 93 £6800 If the price is reduced by 15% what is the new price? 52T) 73.5 ÷ 0.21 350 Grade C Clip 100 52S) 18.02 ÷ 0.34 53 53T) What are the first 5 terms of the number sequence 5 8 11 14 17 with the nth term of 3n + 2? Grade D Clip 65 53S) What are the first 5 terms of the number sequence 1 5 9 13 17 with the nth term of 4n – 3? Page 26 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 26
  • 27. 54T) Translate triangle A by vector -5 -3 87654321 87654321 87654321 87654321 87654321 87654321 87654321 87654321 Grade D Clip 77 54S) Describe fully the transformation which maps triangle A onto triangle B. Translation by vector -6 1 B .. 3 55T) Change the recurring decimal 0.27 into a fraction in its simplest form. 11 .. 7 55S) Change the recurring decimal 0.63 into a fraction in its simplest form. 11 Grade C Clip 98 Page 27 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 27
  • 28. 56T) What is the equation of the line? y = 2x + 1 y 5 4 3 2 1 x -3 -2 -1 O 1 2 3 -1 -2 -3 Grade D Clip 114 56S) What is the equation of the line? y = 3x – 2 y 5 4 3 2 1 -3 -2 -1 O 1 2 3 -1 -2 -3 57T) List all of the outcomes if you roll a dice and 1H 2H 3H 4H 5H 6H flip a coin. 1T 2T 3T 4T 5T 6T 57S) List all of the outcomes if you flip three coins. HHH HHT HTH THH TTT TTH THT HTT Grade D Clip 90 Page 28 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 28
  • 29. 58T) Use a protractor to work out the bearing of A from B. Bearing of A from B is 293° Grade C Clip 131 A A N B B 58S) Use a protractor to work out the bearing of B from A. Bearing of B from A is 046° B N B A A 59T) In the list of fractions, below, which two are equivalent to 4 ? 5 5 8 8 10 16 18 8 16 6 9 10 11 20 24 10 20 59S) In the list of fractions, below, which two are equivalent to 2 ? 3 8 7 6 8 10 14 8 14 12 8 12 14 16 21 12 21 Grade C Clip 47 60T) A map has a scale of 1:100 000. If town A is 5cm away from town B on the map, what is 5km the actual distance between them in kilometres? 60S) A map has a scale of 1:500 000. If town A is 3cm away from town B on the map, what is 15km the actual distance between them in kilometres? Grade C Clip 61 Page 29 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 29
  • 30. 61T) a) -3 × -4 61S) a) 6 × -3 a) 12 a) -18 b) 7 × -5 b) -10 × -2 b) -35 b) 20 c) -12 ÷ 4 c) 15 ÷ -3 c) -3 c) -5 d) -8 – 6 d) 12 – 18 d) -14 d) -6 e) 9 – -5 e) 2 – -13 e) 14 e) 15 f) 10 + -6 f) 15 + -17 f) 4 f) -2 g) -4 + -5 g) -6 + -8 g) -9 g) -14 Grade C Clip 99 62T) Use the graph to solve the simultaneous equations y = 7 – x and y = 2x – 2 y 8 y = 2x – 2 x = 3 and y = 4 y=7–x 7 6 5 4 3 2 1 0 x 0 1 2 3 4 5 6 7 8 Grade C Clip 115 62S) Use the graph to solve the simultaneous equations y = 8 – 2x and y = ½x + 3 y 8 y = 8 – 2x x = 2 and y = 4 7 y = ½x + 3 6 5 4 3 2 1 0 x 0 1 2 3 4 5 6 7 8 Page 30 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 30
  • 31. 40 400 37.9 × 417 37.9 × 417 63T) Estimate the answer to 1000 1.94 × 8.03 1.94 × 8.03 2 8 873 × 18 900 20 63S) Estimate the answer to 180 104 873 × 18 104 Grade C Clip 101 100 64T) Point P has coordinates (7, 4, 3) Point T is the intersection of PR and SQ. Work out the coordinates of T. (3.5, 2, 3) y Grade C Clip 120 S . . P . T x R . . Q z 64S) Point P has coordinates (8, 3, 4) a) Work out the coordinates of T. a) (8, 3, 0) b) Work out the coordinates of S. b) (0, 0, 4) y . T . P x S . z 65T) If the probability of passing a driving test is 0.42 what is 0.58 the probability of failing the test? 65S) The probability of a school football team winning a 0.45 football match is 0.34 and the probability of losing is 0.21. What is the probability of the team drawing the match? Grade D Clip 91 Page 31 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 31
  • 32. 66T) Draw the net of this right-angled triangular prism. 5 squares Grade D 4 squares Clip 82 ares 3 squares 5 squ 66S) Draw the net of this cuboid 3 squares 2 squares 5 squares Page 32 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 32
  • 33. 67T) Write the following fractions in their simplest forms. a) 16 a) 4 20 5 9 Grade D 3 b) 15 b) Clip 48 5 c) 24 c) 2 60 5 67S) Write the following fractions in their simplest forms. a) 12 a) 2 30 5 b) 7 b) 1 21 3 c) 40 c) 5 64 8 68T) Here are the ingredients needed to make salmon fishcakes for four people. 450g potatoes 900g of salmon 25g butter Grade D 15g dill Clip 62 50g flour 2 eggs 150g breadcrumbs a) What weight of salmon would be needed to use a) 1350g the recipe for six people? b) For seven people, what weight of flour is needed? b) 87.5g 68S) Here are the ingredients needed to make shepherd's pie for five people. 500g potatoes 50g of cheese 150g butter 1 onion 2 carrots 300ml stock 1kg of lamb a) What weight of cheese would be needed to use a) 80g the recipe for eight people? b) For six people, how much stock is needed? b) 360ml c) For nine people, what weight of lamb c) 1.8kg should be used? Page 33 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 33
  • 34. 69T) Put these fractions in order of size, smallest to largest. 5 7 2 3 7 5 2 3 8 12 3 4 12 8 3 4 69S) Put these fractions in order of size, smallest to largest. 4 9 7 1 9 1 7 4 5 20 10 2 20 2 10 5 Grade D Clip 49 70T) a) What is the square of 6? a) 36 Grade D b) Find the cube of 4. b) 64 c) What is the square root of 49? Clip 46 c) 7 d) What is the cube root of 27? d) 3 e) Evaluate 144 e) 12 70S) a) What is the square of 8? a) 64 b) Find the cube of 2. b) 8 c) What is the square root of 100? c) 10 d) What is the cube root of 125? d) 5 e) Evaluate 169 e) 13 71T) Sara wishes to find out how much pocket money people How much pocket money do you in her class received. receive each week? Design a suitable question she could use Less than £2 on a questionnaire. Between £2.01 and £4 More than £4 You should include some tickboxes. 71S) Fred wants to know which sports are watched by pupils in Sport Tally Frequency his class. Football Design a suitable data collection sheet he can use Cricket to find out. Tennis Athletics Grade D Clip 84 Rugby Grade C Clip 134 Other 72T) Change the following fractions to decimals. a) 4 b) 3 a) 0.8 b) 0.375 5 8 72S) Change the following fractions to decimals. a) 0.6 b) 0.625 a) 6 b) 5 10 8 Grade D Clip 58 Page 34 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 34
  • 35. Questions 73 to 85 are all calculator questions 73T) Find the length of sides A, B and C giving your answers to one decimal place. 14cm A 13.9cm B 18.2cm A B 12cm 23cm C 5.6cm 7cm Grade C C 3.9cm Clip 118 6.8cm 73S) Find the length of sides A, B and C giving your answers to one decimal place. A 14.4cm 58cm B 111.9cm 17cm A 126cm C 12.7cm 9cm B 9.5cm 8.5cm C 74T) The equation x3 + 2x = 20 has a solution between 2 and 3. x=2 23 + 2 × 2 = 12 Too low x=3 33 + 2 × 3 = 33 Too big Use a trial and improvement method to find this solution. x = 2.4 2.43 + 2 × 2.4 = 18.624 Too low Give your answer to 1 decimal place and show all workings. x = 2.5 2.53 + 2 × 2.5 = 20.625 Too big x = 2.45 2.453 + 2 × 2.45 = 19.60612 Too low x = 2.5 to 1 decimal place. x=4 43 – 4 × 4 = 48 Too low 74S) The equation x3 – 4x = 88 has a solution between 4 and 5. x=5 53 – 4 × 5 = 105 Too big Use a trial and improvement method to find this solution. x = 4.7 4.73 – 4 × 4.7 = 85.023 Too low Give your answer to 1 decimal place and show all workings. x = 4.8 4.83 – 4 × 4.8 = 91.392 Too big x = 4.75 4.753 – 4 × 4.75 = 88.17187 Too big Grade D Clip 110 x = 4.7 to 1 decimal place. Page 35 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 35
  • 36. 75T) a) 34% of £28.76 = Grade D a) £9.78 b) 76% of 900 = b) 684 Clip 46 c) Reduce £45.50 by 12.5% c) £39.81 75S) a) 29% of £235.60 = a) £68.32 b) 43% of 2400 = b) 1032 c) Reduce £260 by 30% c) £182 76T) If £1 = 1.23 Euros, Grade D a) Change £38 to Euros. Clip 64 a) 46.74 Euros b) Change 650 Euros to pounds (£). b) £528.46 76S) If £1 = 1.27 Euros, a) Change £2000 to Euros. a) 2540 Euros b) Change 923 Euros to pounds (£). b) £726.77 77T) a) Find the area of the following circles. Give both answers to 1 decimal place. (i) (ii) a) (i) 153.9cm2 (ii) 452.4cm2 7cm 24cm b) Find the area of this quarter circle. b) 78.5cm2 Grade D Clip 71 10cm 77S) a) Find the area of the following circles. Give both answers to 1 decimal place. (i) (ii) a) (i) 380.1cm2 (ii) 243.3cm2 11cm 17.6cm b) Find the area of this semicircle. 19cm b) 141.8cm2 Page 36 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 36
  • 37. 78T) Which is the best value for money 0.55p per gram 500g of sausages for £2.75 or 0.57p per gram 650g of the same type of sausages for £3.70? 500g for £2.75 best value You must show all your working. 78S) Which is the best value for money 0.106p per ml 800ml of orange juice for £0.85 or Grade D 0.13p per ml 350ml of orange juice for £0.46? Clip 50 800ml for £0.85 best value You must show all your working. 79T) a) Find the circumference of the following circles. Give both answers to 1 decimal place. (i) (ii) a) (i) 44.0cm (ii) 75.4cm 7cm 24cm b) Find the perimeter of this b) 35.7cm quarter circle to 1 decimal place. Grade D Clip 72 10cm 79S) a) Find the circumference of the following circles. Give both answers to 1 decimal place. (i) (ii) a) (i) 69.1cm (ii) 55.3cm 11cm 17.6cm b) 48.8cm b) Find the perimeter of this semicircle 19cm to 1 decimal place. Page 37 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 37
  • 38. 80T) a) Change the following to percentages. Give your answers to 1 decimal place. (i) 17 out of 67 a) (i) 25.4% (ii) 134 out of 386 (ii) 34.7% b) If Sue scores 82 marks out of a possible 120 marks, b) 68.3% what was her score as a percentage? 80S) a) Change the following to percentages. Give your answers to 1 decimal place. (i) 44 out of 78 a) (i) 56.4% (ii) 12.6 out of 59 (ii) 21.4% b) If Sue scores 14 marks out of a possible 75 marks, b) 18.7% what was her score as a percentage? Grade D Clip 53 81T) Find the volume of this cylinder. Give your answer to 1 decimal place. 9cm Volume = 6107.3cm3 Grade D 24cm Clip 122 81S) Find the volume of this cylinder. Give your answer to 1 decimal place. 20cm Volume = 14765.5cm3 47cm 8.23 + 2.32 23.59360083 82T) Evaluate = 0.907097302 (12.4 – 7.3)2 Grade D 26.01 Clip 63 19.62 + 73 + 25 403.5249167 = 3.433767009 82S) Evaluate 117.5166852 3 5 – 56 Page 38 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 38
  • 39. 83T) Find the length of the line. y 6 5cm Grade C 5 6 Clip 119 5 4 4 3 3 2 2 1 1 x O 1 2 3 4 5 6 O 1 2 3 4 5 6 83S) Find the length of the line to 1 decimal place. y 6 5.4cm 5 6 4 5 4 3 3 2 2 1 1 x O 1 2 3 4 5 6 O 1 2 3 4 5 6 84T) a) A cyclist travels 12 miles in 2 hours. a) 6mph What is the cyclist's speed in mph? Grade C b) Sue walks for 45 minutes at 14mph. b) 10.5 miles How far does she travel? Clip 126 c) A piece of lead has a mass of 340g and a c) 11.3 g/cm3 volume of 30cm3. Work out its density in g/cm3. 84S) a) A cyclist travels at 14.3mph for 4 hours. a) 57.2 miles What distance does he cover? b) Sue drives at an average speed of 57mph and covers b) 4 hours 30 minutes a distance of 256.5 miles. How long does the journey take in hours and minutes? c) A piece of lead has a density of 12g/cm3 and a c) 166.7cm3 mass of 2kg. Work out its volume in cm3. Page 39 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 39
  • 40. 85T) The two triangles are similar. 37.8cm x y 5cm 8cm 43.2cm a) Work out the size of x. a) x = 27cm b) Work out the size of y. b) y = 7cm 85S) BE is parallel to CD Find the length of BC. Grade C BC = 8cm Clip 123 A 10cm B E 12cm x C D 21.6cm Page 40 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 40
  • 41. 22 Essential Questions at grade B (A calculator can be used on all questions apart from qu. 13) 1T) Solve these two simultaneous equations 2r + 3s = 6 3r – 2s = 22 Grade B Clip 142 r = 6 and s = –2 1S) Solve these two simultaneous equations h + 3t = –10 h = 2 and t = –4 2h – t = 8 2T) Mary recorded the heights, in centimetres, of the girls in a) LQ = 152 her class. Grade B b) UQ = 177 She put the heights in order. Clip 152 132 144 150 152 160 162 162 167 167 170 172 177 181 182 182 a) Find the lower quartile b) Find the upper quartile c) On the grid, draw a boxplot for this data. 2S) Mary recorded the heights, in centimetres, of the girls in her class. a) LQ = 154 She put the heights in order. b) UQ = 181 131 142 142 150 158 161 165 169 169 169 173 179 183 185 186 188 a) Find the lower quartile b) Find the upper quartile c) On the grid, draw a boxplot for this data. Page 41 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 41
  • 42. 3T) Work out the lengths or angles indicated by the letters a to d. a = 23.2cm 25cm b a 8cm b = 58.4° c = 61.8cm 13cm 68° d = 64.6° Grade B Clip 153 50cm 42cm 36° c d 18cm 3S) Work out the lengths or angles indicated by the letters e to h. 13cm e e = 56.9° f 15cm f = 24.5cm 23cm 32° g = 21.3cm h = 54.1° h 14° 22cm 19.6cm g 24.2cm Page 42 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 42
  • 43. 4T) TR and TQ are tangents to the circle a) Explain why angle PQR = 42º a) PQT = 90°(Tangent meets radius at 90°) Grade B 90° – 48° = 42° Clip 150 b) PRQ = 90°(angle in semicircle is 90°) TRQ = 48°(tri. TRQ is isosceles and base angles are equal) PRT = 90° + 48° = 138° b) Find the size of angle PRT giving reasons 4S) TR and TQ are tangents to the circle a) Explain why angle PQR = 35º a) PQT = 90°(Tangent meets radius at 90°) 90° – 55° = 35° b) PRQ = 90°(angle in semicircle is 90°) TRQ = 55°(tri. TRQ is isosceles and base angles are equal) PRT = 90° + 55° = 145° b) Find the size of angle PRT giving reasons a 5T) Find angles a and b a = 85° (opp angles of cyclic 105° quad. add up to 180) b = 75°(opp angles of cyclic Grade B 95° b quad. add up to 180) Clip 150 5S) Find angles a and b b a = 55° (opp angles of cyclic 125° quad. add up to 180°) a b = 117°(opp angles of cyclic 63° quad. add up to 180°) Page 43 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 43
  • 44. 6T) Find the size of angle x. x = 112° 124 o x Grade B 6S) Find the size of angle y. Clip 150 y = 138° 84 o y 7T) a) John places £13000 in a bank which pays 4.6% a) £1877.79 compound interest per year. How much interest does he earn if he leaves the money in the bank for 3 years? b) Sue buys a new car for £8700. b) £2354.90 Its annual rate of depreciation is 23% per year. How much is it worth after 5 years? Grade B Clip 142 7S) a) Sarah buys a 5-year bond which pays compound a) £10605.19 interest of 5.8% per year. She buys the bond for £8000. How much can she cash the bond in for at the end of the 5 year period? b) Tom buys a house for £145000. b) £135223.35 It will depreciate at the rate of 2.3% per year for the next three years. How much will it then be worth? Page 44 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 44
  • 45. 8T) The heights of 64 plants were measured and can be seen in this table. Height (cm) Frequency 0 < h < 10 3 10 < h < 20 7 Grade B 20 < h < 30 23 Clip 151 30 < h < 40 24 40 < h < 50 5 50 < h < 60 2 a) Complete this cumulative frequency table. a) Height (cm) Cumulative Frequency Height (cm) Cumulative Frequency 0 < h < 10 3 0 < h < 10 3 0 < h < 20 0 < h < 20 10 0 < h < 30 0 < h < 30 33 0 < h < 40 0 < h < 40 57 0 < h < 50 0 < h < 50 62 0 < h < 60 0 < h < 60 64 b) Draw a cumulative frequency curve for your table. c) Use your graph to find an estimate for the b) 80 interquartile range of the heights of the plants. CF 80 70 CF x 60 x x 70 50 UQ 60 40 median x 30 50 20 LQ 40 10 x x 0 0 10 20 30 40 50 60 30 Height (cm) c) IR = UQ – LQ 20 = 34.5 – 23.5 = 11cm 10 0 0 10 20 30 40 50 60 Height (cm) Page 45 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 45
  • 46. 8S) The weights of 72 boxes of recycled metals can be seen in this table. Weight (kg) Frequency 0 < w < 10 8 10 < w < 20 12 20 < w < 30 18 30 < w < 40 24 40 < w < 50 7 50 < w < 60 3 a) Complete this cumulative frequency table. a) Weight (kg) Cumulative Frequency Weight (kg) Cumulative Frequency 0 < w < 10 8 0 < w < 10 8 0 < w < 20 0 < w < 20 20 0 < w < 30 0 < w < 30 38 0 < w < 40 0 < w < 40 62 0 < w < 50 0 < w < 50 69 0 < w < 60 0 < w < 60 72 b) Draw a cumulative frequency curve for your table. c) Use your graph to find an estimate for the b) 80 interquartile range of the weights of the boxes. CF x 80 70 x CF 60 x 70 UQ 50 60 40 median x 30 50 20 LQ x 40 10 x 0 0 10 20 30 40 50 60 30 Weight (kg) c) IR = UQ – LQ 20 = 36.2 – 18.5 = 17.7kg 10 0 0 10 20 30 40 50 60 Weight (kg) Page 46 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 46
  • 47. 9T) The table shows the amount of ice-creams that David sells over a six week period. Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 235 294 360 258 310 378 a) Work out the 3-week moving averages for a) 296.3 304 309.3 315.3 this information. b) Work out the 4-week moving averages for b) 286.75 305.5 326.5 this information. Grade B Clip 153 9S) The table shows the quantity of fleeces sold by a shop in a 6-month period. Jan Feb Mar Apr May Jun 200 172 134 101 78 25 a) Work out the 3-month moving averages for a) 168.7 135.7 104.3 68.0 this information. b) Work out the 4-month moving averages for b) 151.75 121.25 84.5 this information. 10T) Two fair six sided dice are rolled. a) Complete the tree diagram to show the outcomes. a) 1 6 6 Red dice Blue dice 1 6 6 not 5 6 6 1 1 6 six not 6 6 5 6 6 not Grade B 5 6 6 not six Clip 154 b) 5 5 10 b) What is the probability of rolling a six on + = 36 36 36 one dice and 'not a six' on the other dice? 10S) Two coins are flipped. a) Complete the tree diagram to show the outcomes. a) 1 2 H Coin 1 Coin 2 1 H 2 1 T 1 2 head 1 2 2 H 1 2 T 1 T 2 tail b) What is the probability of flipping a head on b) 1 1 2 + = one coin and a tail on the other coin? 4 4 4 Page 47 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 47
  • 48. 11T) a) In a sale, all the prices have been reduced by 15%. a) £17 The sale price of a shirt is £14.45 What was the pre-sale price of the shirt? b) The price of a computer is £799. This price b) £680 includes VAT which is 17.5%. What is the cost of the computer before VAT is added? Grade B Clip 138 11S) a) A bank pays interest of 6.8% per year. a) £2100 Emma places some money in the bank and, one year later, after the interest has been paid, she has £2242.80 in her account. b) £4500 How much did she put in the bank? b) After a reduction of 12.5%, Sam pays £3937.50 for a car. How much was the car before the reduction? 12T) In September 2007, Jim weighed 85.0kg. 2% In September 2008, he weighed 86.7kg. What was his percentage increase in weight? Grade B Clip 136 12S) The price of a car decreases from £7600 to £5168 32% in one year. What is the percentage depreciation in this year? 3 3 1 2 7 a) 3 20 b) 23 13T) a) 2 5 + 4 b) 1 6 – 5 30 1 2 1 2 1 c) 4 ×3 d) 5 ÷2 c)16 2 d) 2 2 3 3 3 Grade B Clip 139 2 1 2 5 a) 3 13 b) 1 5 13S) a) 1 9 +2 2 b) 4 3 – 2 6 18 6 c) 2 1 1 d) 3 4 5 c) 12 d) 10 4 ×5 3 7 ÷ 14 a) (x + 2)(x + 4) = 0 14T) Factorise and solve the following equations: x = -2 or x = -4 a) x2 + 6x + 8 = 0 b) (x + 5)(x – 2) = 0 b) x2 + 3x – 10 = 0 Grade B x = -5 or x = 2 c) (x – 5)(x – 2) = 0 c) x2 – 7x + 10 = 0 x = 5 or x = 2 d) 6x2 + 7x – 3 = 0 Clip 140 d) (2x + 3)(3x – 1) = 0. x = -1.5 or x = 0.3 14S) Factorise and solve the following equations: a) (x + 2)(x + 6) = 0 a) x2 + 8x + 12 = 0 x = -2 or x = -6 b) (x + 8)(x – 5) = 0 b) x2 + 3x – 40 = 0 x = -8 or x = 5 c) x2 – 4x + 3 = 0 c) (x – 1)(x – 3) = 0 x = 1 or x = 3 d) 10x2 + x – 3 = 0 d) (5x + 3)(2x – 1) = 0 x = -0.6 or x = 0.5 Page 48 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 48
  • 49. Page 49 mathswatch@aol.co.uk www.mathswatch.com ©MathsWatch Page 49 6 5 4 3 2 1 O x 1 6 5 4 3 2 1 O 1 2 876543210987654321 2 876543210987654321 876543210987654321 876543210987654321 876543210987654321 3 876543210987654321 876543210987654321 876543210987654321 3 876543210987654321 876543210987654321 876543210987654321 876543210987654321 876543210987654321 876543210987654321 876543210987654321 876543210987654321 4 876543210987654321 4 876543210987654321 876543210987654321 5 6 5 6 y y< 2 y< x+1 y < 3x – 6 show the region R that satisfies the inequalities 15S) On the grid, draw straight lines and use shading to Grade B Clip 144 6 5 4 3 2 1 O x 1 6 5 4 3 2 1 O 1 2 2 3 3 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 4 109876543210987654321 109876543210987654321 4 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 109876543210987654321 5 109876543210987654321 6 5 6 y y< 3 y < 2x + 3 x+y < 6 show the region R that satisfies the inequalities 15T) On the grid, draw straight lines and use shading to
  • 50. 16T) A and B are two geometrically similar solids. 57914.92cm3 The total surface area of shape A is 3200cm2 The total surface area of shape B is 16928cm2 The volume of shape A is 4760cm3 Calculate the volume of shape B. Grade B Clip 149 16S) C and D are two geometrically similar solids. 38.4cm2 The volume of shape C is 17cm3 The volume of shape D is 136cm3 The total surface area of shape C is 9.6cm2 Calculate the total surface area of shape D. 17T) A, B and C are all towns. A is 7.8km due east of B. 147.0° B is 12km due south of C. Calculate the bearing of A from C. Give your answer correct to 1 decimal place. Grade B Clip 148 17S) A, B and C are all towns. B is due south of A. C is 18km due east of B and on a bearing of 152° from A. Calculate the distance between A and B. 33.9km Give your answer correct to 1 decimal place. 18T) a) Factorise (i) x2 – 64 a) (i) (x – 8)(x + 8) (ii) 25y2 – 36 (ii) (5y – 6)(5y + 6) b) Simplify 4a2 – 49b2 2a – 7b b) 6a + 21b 3 2 c) Solve 9x = 100 c) (3x – . 10)(3x + 10).= 0 x = 3.3 or x = -3.3 Grade B Clip 141 18S) a) Factorise (i) x2 – 36 a) (i) (x – 6)(x + 6) (ii) 4y2 – 9 (ii) (2y – 3)(2y + 3) b) Simplify 4a2 – b2 2a + b b) 8a – 4b 4 2 c) Solve 16x – 25 = 0 c) (4x – 5)(4x + 5) = 0 x = 1.25 or x = -1.25 19T) Work out the following, giving your answer in standard form. Grade B (7 × 106) × (9 × 104) 6.3 × 1011 Clip 135 19S) Work out the following, giving your answer in standard form. (8 × 108) ÷ (4 × 105) 2 × 103 Page 50 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 50
  • 51. 20T) a) Complete this table of values for a) y = x3 + x – 2 x –2 –1 0 1 2 y –12 -4 -2 0 8 x –2 –1 0 1 2 y –12 b) 8 x 3 b) On the grid, draw the graph of y = x + x – 2 6 y 4 2 8 x -2 -1 O 1 2 -2 x 6 x -4 -6 4 -8 -10 2 x -12 x -2 -1 O 1 2 -2 -4 -6 -8 -10 -12 c) Use the graph to find the value of x when y = 2 c) x = 1.4 Grade B Clip 145 Page 51 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 51
  • 52. 20S) a) Complete this table of values for a) y = x3 – 3x x –2 –1 0 1 2 y -2 2 0 -2 2 x –2 –1 0 1 2 y b) x 2 x 3 b) On the grid, draw the graph of y = x – 3x y 1 2 O x -2 -1 1 2 -1 1 x -2 x x -2 -1 O 1 2 -1 -2 c) Use the graph to find the three values of x when y = 1 c) x = -1.7 or -0.25 or 1.95 Page 52 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 52
  • 53. 21T) a) A straight line is parallel to y = 3x – 1 and goes a) y = 3x + 4 through (1, 7). What is its equation? b) A straight line goes through points (1, 5) and (3, 13). b) y = 4x + 1 What is its equation? Grade B Clip 143 21S) a) A straight line is parallel to y = 5x – 3 and goes a) y = 5x + 2 through (3, 17). What is its equation? b) A straight line goes through points (1, 5) and (3, 3). b) y = 6 – x What is its equation? 22T) Sketch the graphs of a) y = x2 b) y = x3 c) y = 2x + 4 d) y = -x3 Grade B Clip 146 22S) Sketch the graphs of 1 a) y = -x2 b) y= x c) y = 3x – 6 d) y = x2 – 4 y = x2 a) b) y = x3 y = 2x + 4 c) 4 d) y = -x3 y = -x2 a) b) 1 y= x y = 3x – 6 c) d) y = x2 – 4 -6 Page 53 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 53
  • 54. Page 54 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 54
  • 55. 26 Essential Questions at grade A/A* (A calculator can be used on all questions unless told otherwise) y 1T) Grade A/A* Clip 167 (2, 1) × y = f(x) x 0 The diagram shows part of the curve with equation y = f(x). The coordinates of the maximum point of this curve are (2, 1). Write down the coordinates of the maximum point of the curve with equation a) y = f(x) + 3 a) (2, 4) b) y = f(x) – 1 b) (2, 0) c) y = f(x – 3) c) (5, 1) d) y = 2f(x) d) (2, 2) e) y = f(½x) e) (4, 1) 1S) y y = f(x) x 0 × (1, -4) The diagram shows part of the curve with equation y = f(x). The coordinates of the minimum point of this curve are (1, -4). Write down the coordinates of the minimum point of the curve with equation a) y = ½f(x) a) (1, -2) b) y = f(2x) b) (0.5, -4) c) y = f(x + 5) c) (-4, -4) d) y = f(x) + 4 d) (1, 0) e) y = 3f(x) e) (1, -12) Page 55 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 55
  • 56. 2T) For each triangle find the side or angle marked with the letter x. Give your answer correct to 1 decimal place. a) Grade A/A* b) 66 cm x Clip 173 94 cm a) 6.3 cm 8 cm 68° 56° b) 40.6° x 41° c) 11.7 cm d) 57.1° c) d) 6 cm 9 cm 7 cm 5 cm 110° x 5 cm x 2S) For each triangle find the side or angle marked with the letter x. Give your answer correct to 1 decimal place. 62° 67° a) x b) 10 m a) 78.5° 12 m x b) 5.2 cm 5 cm c) 10.0 cm 14m d) 49.5° c) d)* 8 cm 7 cm x 98° 95° 5 cm x 12 cm *A tricky sine rule question. 3T) Solve 3x2 + 7x – 12 = 0 Give your solutions correct to 2 decimal places. x = 1.15 or x = -3.48 3S) Solve 2x2 – 5x + 1 = 0 Give your solutions correct to 2 decimal places. x = 2.28 or x = 0.22 Grade A/A* Clip 161 Page 56 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 56
  • 57. 4T) q is inversely proportional to the square of t. When t = 5, q = 9.6 a) Find a formula for q in terms of t. a) q = 240 t2 b) Calculate the value of q when t = 8. b) q = 3.75 c) When q = 2.4, calculate the value of t. c) t = 10 4S) The distance d through which a body falls from rest is proportional to the square of the time taken, t. The body falls 45m in 3 seconds. a) Find a formula for d in terms of t. a) d = 5t2 b) How far will the body fall in 6 seconds? b) d = 180 m c) How long will the body take to fall 20m? c) t = 2 seconds Grade A/A* Clip 159 5T) y (3, 200) Grade A/A* (1, 8) Clip 170 x 0 The sketch shows a curve with function y = kax a=5 where k and a are constants and a > 0. k = 1.6 The curve passes through points (1, 8) and (3, 200). Calculate the value of k and the value of a. 5S) y (4, 192) (1, 3) x 0 The sketch shows a curve with function y = kax a=4 where k and a are constants and a > 0. k = 0.75 The curve passes through points (1, 3) and (4, 192). Calculate the value of k and the value of a. Page 57 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 57
  • 58. Page 58 mathswatch@aol.co.uk www.mathswatch.com ©MathsWatch Page 58 -5 -4 -3 -5 -2 -4 -3 3210987654321 3210987654321 -1 3210987654321 3210987654321 -2 3210987654321 3210987654321 3210987654321 3210987654321 5 4 3 2 1 -1 -2 -3 -4 -5 3210987654321 O -1 3210987654321 3210987654321 3210987654321 x 5 4 3 2 1 3210987654321 -1 -2 -3 -4 -5 O 3210987654321 3210987654321 3210987654321 3210987654321 3210987654321 3210987654321 1 3210987654321 3210987654321 1 3210987654321 3210987654321 3210987654321 × 2 3210987654321 654321 654321 B 3210987654321 654321 654321 654321 10987654321 3 × 2 654321 10987654321 654321 10987654321 654321 654321 10987654321 10987654321 B 654321 654321 4 10987654321 10987654321 10987654321 10987654321 10987654321 3 5 10987654321 10987654321 10987654321 10987654321 10987654321 10987654321 10987654321 10987654321 10987654321 4 5 y 6S) Enlarge triangle B by scale factor -2½, centre (2, 2) Grade A/A* Clip 171 -5 -4 -3 -2 -5 87654321 -4 87654321 87654321 87654321 87654321 -1 87654321 -3 87654321 87654321 87654321 87654321 87654321 5 4 3 2 1 -1 -2 -3 -4 -5 -2 87654321 O 87654321 87654321 87654321 x -1 5 4 3 2 1 O -1 -2 -3 -4 -5 1 0987654321 0987654321 54321 1 0987654321 54321 0987654321 54321 0987654321 0987654321 A A 54321 0987654321 54321 2 0987654321 54321 54321 0987654321 2 54321 0987654321 54321 0987654321 54321 0987654321 54321 3 0987654321 0987654321 0987654321 0987654321 0987654321 4 0987654321 0987654321 3 5 4 5 y 6T) Enlarge triangle A by scale factor -1½, centre (0, 0)
  • 59. 7T) The maximum load a van can safely carry is 1800kg. Fred transports metal bars in the van. Each bar weighs 90kg. 1750 ÷ 95 = 18.42 Fred knows that the 1800 is rounded correct to Greatest number 2 significant figures and 90 is rounded correct to of bars = 18 1 significant figure. Calculate the greatest number of bars that Fred can safely carry in the van. Show all workings. Grade A/A* Clip 160 7S) 10.6 m 5432121098765432109876543210987654321 5 5432121098765432109876543210987654321 432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 6.8 m 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 2.6 m 5432121098765432109876543210987654321 5432121098765432109876543210987654321 4.8 m 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 5432121098765432109876543210987654321 All measurements are rounded correct to 1 decimal place. a) 51.6525 – 17.2125 = 34.44 m2 a) Find the largest possible value of the shaded area. b) 50.1125 – 18.1525 b) Find the least possible value of the shaded area. = 31.96 m2 8T) Calculate the area of triangle ABC. Give your answer correct to 1 decimal place. Area = 65.5 cm2 A 9 cm 104° 15 cm B C 8S) Calculate the area of triangle ABC. Give your answer correct to 1 decimal place. A Area = 112.8 cm2 12.6 cm 78° B C 18.3 cm Grade A/A* Clip 176 Page 59 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 59
  • 60. 9T) Simplify fully x2 + 3x – 10 Grade A/A* a) x + 5 a) x–4 x2 – 6x + 8 Clip 163 7(x + 1) b) 4 3 (x + 5)(x – 2) b) x+5 + x–2 c) 5(x – 2) = (2 – 3x)(x + 3) c) Show that the equation 5 2 – 3x x+3 = x–2 5x – 10 = 2x + 6 – 3x2 – 9x 5x – 10 – 2x – 6 + 3x2 + 9x = 0 can be rearranged to give 3x2 + 12x – 16 = 0 3x2 + 12x – 16 = 0 9S) Simplify fully x2 + 7x + 12 a) x + 3 a) x–7 x2 – 3x – 28 9(x + 1) b) 7 2 (x – 6)(x + 3) b) x–6 + x+3 c) (4 – x)(x + 4) = 3(x – 5) c) Show that the equation 4–x 3 x–5 = x+4 4x + 16 – x2 – 4x = 3x – 15 0 = 3x – 15 – 4x – 16 + x2 + 4x can be rearranged to give x2 + 3x – 31 = 0 x2 + 3x – 31 = 0 10T) a) Rationalise the denominator of 1 a) 5 5 5 b) Expand (2 + 5 )(1 + 5 ) b) 7 + 3 5 Give your answer in the form a + b 5 , where a and b are integers. Grade A/A* Clip 157/158 10S) a) Rationalise the denominator of 1 a) 7 7 7 b) Expand and simplify ( 7 – 2 )( 7 + 2 ) b) 5 11T) Emma has 4 blue pens and 3 red pens in a pencil case. She picks a pen at random, notes its colour and then 252 replaces it. She does this two more times. 343 Work out the probability that when Emma takes three pens, exactly two are the same colour. Grade A/A* Clip 182 11S) A box contains toffees covered in either milk, plain or white chocolate. The probability of each is 0.2, 0.5 and 0.3 respectively. 0.42 Tony chooses a chocolate, notes the type of chocolate and replaces it. He then chooses again. What is the probability he chooses exactly one white chocolate toffee? Page 60 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 60
  • 61. A 12T) a OAB is a triangle. R B is the midpoint of OT. S S is the midpoint of AB. 2a OR = 2a RA = a OB = b O b B T a) Find, in terms of a and b, the vectors a) (i) –3a + b (i) AB, (ii) –2a + 2b (ii) RT, (iii) – ½a + ½b (iii) RS b) RS = ½(–a + b) b) Explain why RST is a straight line. RT = 2(–a + b) RT = 4RS so RS is parallel The length of RS is 4 cm. to RT from the same point. c) Find the length of RT. So RST is a straight line. Grade A/A* Clip 180 c) 16 cm 12S) N P Q p M O r R OPQR is a parallelogram. M is the midpoint of RQ. N is the midpoint of PQ. OP = p OR = r a) (i) ½p a) Find, in terms of p and/or q, the vectors (ii) ½p – ½r (i) MQ b) RP = p – r (ii) MN MN = ½p – ½r = ½(p – r) b) Show that RP is parallel to MN So RP is parallel to MN .. . . 15 Let x = 0.45 .. 13T) Prove that the recurring decimal 0.45 = 33 100x = 45.45 99x = 45 .. 4 x = 45 = 15 99 33 13S) Prove that the recurring decimal 0.36 = 11 .. Let x = 0.36 .. Grade A/A* Clip 155 100x = 36.36 99x = 36 x = 36 = 4 99 11 Page 61 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 61
  • 62. 14T) Here is the graph of y = sin x, where 0º < x < 360° y 1 Grade A/A* 0 360° x Clip 169 –1 What are the equations of these three graphs? Choose from y = sin 2x a) y = 2sin x y a) y = –sin x y = -sin x 1 b) y = sin 2x y = sin x + 2 y = sin ½x 0 c) y = sin ½x 360° x y = -2sin x –1 b) c) y y 1 1 0 0 360° x 360° x –1 –1 14S) Here is the graph of y = sin x, where 0º < x < 360° y 1 0 360° x –1 What are the equations of these three graphs? Choose from the same list as in 14T. a) y b) y a) y = –2sin x 2 2 b) y = 2sin x 1 1 c) y = sin x + 2 0 0 x 360° x 360° –1 –1 –2 –2 c) y 2 1 0 360° x –1 Page 62 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 62
  • 63. 15T) This unfinished table and histogram shows information about the takings per day in pounds (p) of a business which sells software. Takings in pounds (p) Frequency 0 < p < 400 6 400 < p < 600 5 600 < p < 800 10 800 < p < 1000 800 < p < 1000 7 1000 < p < 1400 1000 < p < 1400 8 Frequency density 0 200 400 600 800 1000 1200 1400 0 200 400 600 800 1000 1200 1400 Takings in pounds (p) a) Use the information in the histogram to complete the table. b) Use the information in the table to complete the histogram. Grade A/A* Clip 181 Page 63 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 63
  • 64. 15S) This histogram gives information about the paintings sold in a shop one Saturday. Frequency 20 density 16 12 8 4 0 0 5 10 15 20 25 30 35 40 Price (P) in pounds (£) a) Use the histogram to complete the table. Price (p) in pounds (£) Frequency 0<p<5 0<p<5 40 5 < p < 10 5 < p < 10 80 10 < p < 20 10 < p < 20 56 20 < p < 40 20 < p < 40 32 This table gives information about the paintings sold in another shop on the same Saturday. Price (p) in pounds (£) Frequency 0<p<5 100 5 < p < 10 40 10 < p < 20 24 20 < p < 40 96 b) Draw a histogram to represent this information. Frequency 20 density 16 12 8 4 0 5 10 15 20 25 30 35 40 0 0 5 10 15 20 25 30 35 40 Price (p) in pounds (£) Page 64 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 64
  • 65. 16T) A college has 450 students. Each student studies one of German, French, Spanish or Italian. This table shows how many students study each of these languages. Language Number of students German 38 German 7 French 143 French 25 Spanish 76 Spanish 14 Italian 193 Italian 34 An inspector wants to look at the work of a stratified sample of 80 of these students. Find the number of students studying each language that should be in the sample. Grade A/A* Clip 183 16S) The table shows the number of boys and girls in each year group of a secondary school. Year group No. of boys No. of girls 7 105 66 Yr 7 7 8 148 112 Yr 8 11 9 94 90 Yr 9 9 10 63 48 Yr 10 5 11 90 184 Yr 11 18 Total 500 500 James wants to take a stratified sample of 50 girls by year group. Work out the number of girls in each year group that should be in his sample. 17T) Make x the subject of 4y + 24 4(x – 6) = y(4 – 3x) x= 4 + 3y 17S) Make x the subject of the formula x m 2mt = x= x + 2t n n–m Grade A/A* Clip 164 Page 65 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 65
  • 66. 18T) A B 10 cm 10 cm Grade A/A* 60° Clip 178 O OAB is a sector of a circle, centre O a) Work out the length of the arc AB a) Arc = 10.5 cm Give your answer to 1 decimal place. b) Work out the area of sector AOB. b) Sector = 52.4 cm2 Give your answer to 1 decimal place. 18S) A B 115° 18 cm 18 cm O OAB is a sector of a circle, centre O a) Work out the length of the arc AB a) Arc = 36.1 cm Give your answer to 1 decimal place. b) Work out the area of sector AOB. b) Sector = 325.2 cm2 Give your answer to 1 decimal place. x2 + (x – 2)2 = 20 19T) By eliminating y, find the solutions to the simultaneous x2 + x2 – 4x + 4 = 20 equations 2x2 – 4x – 16 = 0 x2 + y2 = 20 x2 – 2x – 8 = 0 y=x–2 (x – 4)(x + 2) = 0 x = 4 and y = 2 Grade A/A* Clip 165 x = -2 and y = -4 19S) By eliminating y, find the solutions to the simultaneous x2 + (x + 1)2 = 13 equations x2 + x2 + 2x + 1 = 13 y=x+1 2x2 + 2x – 12 = 0 x2 + y2 = 13 x2 + x – 6 = 0 (x + 3)(x – 2) = 0 x = -3 and y = -2 x = 2 and y = 3 Page 66 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 66
  • 67. Non calculator question 20T) Here is the graph of y = sin x°, where 0 < x < 360° y 1 Grade A/A* 0 360° x Clip 168 –1 Given that sin 30° = 1 , write down the value of 2 (a) sin 150° a) sin 150º = ½ (b) sin 330° b) sin 330° = -½ Non calculator question 20S) Here is the graph of y = cos x°, where 0 < x < 360° y 1 0.5 O x 30 60 90 120 150 180 210 240 270 300 330 360 390 -0.5 -1 Use the graph to find estimates of the solutions, in the interval 0 < x < 360, of the equations (a) cos x° = –0.3 a) 108°, 252° (b) 4cos x° = 3 b) 42°, 318° Page 67 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 67
  • 68. 21T) Given that x2 + 8x – 2 = (x + p)2 + q for all values of x, a) find the value of p and the value of q. p = 4, q = -18 b) on the axes, draw a sketch of the graph y = x2 + 8x – 2 y y Grade A/A* Clip 162 x x O -4 -18 21S) Given that x2 – 4x – 5 = (x – p)2 + q for all values of x, a) find the value of p and the value of q. p = 2, q = -9 b) on the axes, draw a sketch of the graph y = x2 – 4x – 5 y y x x O 2 -9 Non calculator question 22T) Write down the value of a) 70 a) 1 b) 4–2 Grade A/A* 1 b) 2 Clip 156 16 c) 8 3 c) 4 Non calculator question 22S) Write down the value of a) 120 a) 1 b) 5–3 b) 1 3 125 c) 81 4 c) 27 Page 68 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 68
  • 69. 23T) y Diagram NOT accurately drawn × B (6, 7) Grade A/A* × A (0, 5) Clip 166 0 x The equation of the straight line through A and B is 1 y= 3x+5 a) Write down the equation of another straight line a) y = 1 x + any number 3 1 that is parallel to y = 3 x + 5 eg y = 1 x + 9 3 b) Write down the equation of another straight line b) y = anything x + 5 that passes through the point (0, 5). eg y = 4x + 5 c) Find the equation of the line perpendicular to AB c) y = –3x + 25 passing through B. 23S) y Diagram NOT accurately drawn × B (8, 8) × A (0, 4) 0 x The equation of the straight line through A and B is 1 y= 2x+4 a) Write down the equation of another straight line a) y = 1 x + any number 2 1 that is parallel to y = 2 x + 4 eg y = 1 x + 9 2 b) Write down the equation of another straight line b) y = anything x + 4 that passes through the point (0, 4). eg y = 7x + 4 c) Find the equation of the line perpendicular to AB c) y = –2x + 24 passing through B. Page 69 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 69
  • 70. 24T) H G E F 16 cm D C 8 cm A 9 cm B This is a cuboid, ABCDEFGH AB = 9 cm, BC = 8 cm, AG = 16 cm a) Calculate the length AE. a) 10.5 cm Give your answer to 3 significant figures. b) Work out the angle between CE and the horizontal b) 41º plane ABCD. Give your answer to 2 significant figures. Grade A/A* Clips 174 and 175 24S) X 12 cm D C M 9 cm A 9 cm B The diagram shows a square-based pyramid ABCDX. AB = BC = 9 cm. The point M is the centre of the square base. XM = 12 cm. a) Calculate the length of AC. a) 12.7 cm Give your answer to 3 significant figures. b) Work out the angle between the edge AX and the b) 62.1º horizontal plane ABCD. Give your answer to 1 decimal place. Page 70 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 70
  • 71. 25T) 8 cm This is a sphere with radius 8 cm. a) Find the volume of the sphere. a) V = 2140 cm3 Give your answer to 3 significant figures. b) Find the surface area of the sphere. b) SA = 804 cm2 Give your answer to 3 significant figures. Grade A/A* Clip 177 25S) 13 cm 4 cm This is a cone with radius 4 cm and height 13 cm. a) Find the volume of the cone. a) V = 218 cm3 Give your answer to 3 significant figures. b) Find the curved surface area of the cone. b) SA = 171 cm2 Give your answer to 3 significant figures. 26T) Find the equation of the circle with centre (0, 0) and x2 + y2 = 36 radius 6 cm. Grade A/A* Clip 172 26S) Find the equation of the circle with centre (0, 0) and x2 + y2 = 100 radius 10 cm. Page 71 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 71
  • 72. Page 72 ©MathsWatch www.mathswatch.com mathswatch@aol.co.uk Page 72
  • 73. Index Symbols E 3D-coordinates 31 enlargements - negative scale factor 58 3D-Pythagoras 70 enlargements - positive scale factor 11 3D-trigonometry 70 equations 14 equivalent fractions 29 A estimate for the mean 9 algebraic fractions 60 estimation 31 alternate angles 13 evaluate with calculator 38 angles in triangle 13 Evaluating numers with indices - simple 24 angles of polygons 12 Expanding brackets 3 area of circle 36 exponential functions 57 area of compound shapes 16 F area of rectangle 16 area of sphere 71 factorising - simple 5 area of triangle 16 factorising quadratics 48 areas of triangles using sine 59 factors, multiples and primes 24 foreign currency conversion 36 B forming equations 12 bearings - calculation of 50 forming expressions 12 bearings - finding with protractor 29 fraction of an amount 8 best value for money 37 fractional and negative indices 68 bisect a line 7 fractions - algebraic 60 bisect an angle 7 fractions - changing to decimal 34 BODMAS 7 fractions - four rules 15 bounds - difficult questions 59 fractions - four rules, difficult 48 bounds at grade C level 5 fractions - putting in order 34 box plots 41 fractions - simplifying 33 frequency diagrams 22 C frequency polygons 22 change the subject of a formula 17 G change the subject of formula - difficult 65 circle theorems 43, 44 gradients of parallel and perpendicular lines 69 circles - area 36 graph of trig functions 67 circles - circumference 37 graphs - linear 21 circles and loci - equations 71 graphs - recognising 53 circumference of circle 37 graphs - transformations 55 completing the square 68 graphs of cubics 51, 52 compound interest/depreciation 44 graphs of quadratics 19, 20 compound measures 39 H compound shapes - area 16 cone - volume and surface area 71 hard calculator question 38 coordinates - 3D 31 highest common factor 7 cosine rule 56 histograms 63, 64 cubes, squares and roots 34 cubics - drawing graphs of 51, 52 I cumulative frequency 45, 46 index notation - multiply and divide 25 curvy graphs 19, 20 indices - fractional and negative 68 cylinder - volume of 38 inequalities - integers 7 inequalities - shading regions 49 D inequalities - solving 24 density, mass, volume 39 inverse proportion 57 difference of two squares 50 dimensions 14 L direct proportion 57 linear graphs 21 directed numbers - four rules 30 loci 23 long division 26 long multiplication 15 lower bounds 5 lowest common multiple 7
  • 74. M S mean from a table 4 scatter diagrams 24 measuring angles 26 sectors of circles 66 median from a table 4 similar 3D shapes 50 moving averages 47 similar triangles 40 multiples 24 simplification of algebraic terms 3 multiplication of decimals 7 simultaneous equations - solving graphically 30 simultaneous equations involving a quadratic 66 N simultaneous linear equations 41 negative indices 68 sine rule 56 nets 32 solve quadratic equation with formula 56 nth term - finding from sequence 4 solving equations 14 nth term - generating a sequence from 26 speed, distance, time 39 spheres - area and volume 71 O squares, cubes and roots 34 outcomes - listing 28 standard form 6 standard form - calculation 50 P stem and leaf diagrams 14 straight lines - finding equation of 28 percentage increase/decrease 48 stratified samples 65 percentages - change to % with calc. 38 subject of a formula - simple 17 percentages - change to % without calc. 23 substitution 6 percentages - find % with calc. 36 surds 60 percentages - find % without calc. 17 surface area 17 percentages - increase and reduction 26 surface area of sphere 71 percentages - reverse 48 symmetry - planes of 21 perimeter involving circles 37 pie charts 15 T planes of symmetry 21 plans and elevations 8 transformation of graphs 55 prime numbers 24 transformation of trig functions 62 probability - experimental 21 transformations 10 probability - mutually exclusive events 31 translations 27 probability AND/OR questions 60 travel graph 18 product of prime factors 7 tree diagrams 47 proportion - direct and inverse 57 trial and improvement 35 Pythagoras - in 2D 35 triangles - drawing with compasses 7 Pythagoras - in 3D 70 trig functions - graphs 67 Pythagoras - line on graph 39 trig functions - transformations 62 trigonometry - 2D 42 Q trigonometry - 3D 70 two-way tables 25 quadratic equations - solving with formula 56 quadratics - factorisation 48 U questionnaires 34 upper bounds 5 R V ratio - map scales 29 ratio - recipe questions 33 value for money 37 ratio - sharing 9 vectors 61 real-life money questions 36 volume of cone 71 real-life number questions 15 volume of cylinder 38 rearranging difficult formulae 65 volume of prism 25 recipes - ratio 33 volume of sphere 71 recognising graphs 53 Y recurring decimals - changing to fraction 27 recurring decimals - from first principles 61 y = mx + c 53 reflections 10 reverse percentage 48 rotations 10