Mathematics NCERT Class 3

MATH-MAGIC
Book 3
Textbook in Mathematics for Class III
2019-2020

ISBN 81-7450-510-5
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Publication Team
Head, Publication : M. Siraj Anwar
Division
Chief Editor : Shveta Uppal
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Manager
Chief Production : Arun Chitkara
Officer
Editor : Bijnan Sutar
Production Assistant : Mukesh Gaur
First EditionFirst EditionFirst EditionFirst EditionFirst Edition
February 2006 Phalguna 1927
ReprintedReprintedReprintedReprintedReprinted
November 2006 Agrahayana 1928
January 2008 Magha 1929
November 2010 Kartika 1932
December 2012 Agrahayana 1934
November 2013 Kartika 1935
November 2017 Agrahayana 1939
December 2018 Agrahayana 1940
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2019-2020

Acknowledgements
National Council of Educational Research and Training (NCERT) thanks the following
persons and institutions for their contribution towards this textbook. Special thanks
are due to the Centre for Science Education and Communication (CSEC), Delhi
University, for providing academic support and hosting all the textbook development
workshops. The teams were fully supported by the staff and put in tremendous
effort through long working hours even on holidays.
The Council acknowledges the advisory support of Rohit Dhankar, Director,
Digantar, Jaipur and the contributions of K. Subramaniam, Homi Bhabha Centre
for Science Education, Mumbai and Indu Dogra, Primary Teacher, M.C.D. Model
School, Seva Nagar, New Delhi. This book has drawn upon ideas from existing
materials, such as, Numeracy Counts! (National Literacy Resource Centre, Mussoorie),
Mathematics For All (Homi Babha Centre for Science Education, Mumbai) and
Mathematics: A Textbook for Class III (SCERT, Delhi).
The Council also gratefully acknowledges the contributions of Sandeep
Mishra and Shashi Vij for their voluntary technical support and of Sadiq Saeed
and Subodh Kumar, DTP Operators and Inderjeet Jairath, Proof Reader in
shaping this book.
2019-2020

Textbook Development Committee
CHAIRPERSON, ADVISORY COMMITTEE FOR TEXTBOOKS AT THE PRIMARY LEVEL
Anita Rampal, Professor, Department of Education, Delhi University, Delhi
CHIEF ADVISOR
Amitabha Mukherjee, Director, Centre for Science Education and Communication
(CSEC), Delhi University, Delhi
MEMBERS
Anita Rampal, Professor, Department of Education, Delhi University, Delhi
Asha Kala, Lecturer, DEE, Institute of Home Economics, New Delhi
Asmita Varma, Primary Teacher, Navyug School, Lodhi Road, New Delhi
Bhavna, Lecturer, DEE, Gargi College, New Delhi
Dharam Parkash, Reader, CIET, NCERT
Preeti Chaddha, Primary Teacher, Basic School, CIE, Delhi University, Delhi
Suneeta Mishra, Primary Teacher, Nagar Palika School, Bapudham, New Delhi
MEMBER-COORDINATOR
Surja Kumari, Professor, Department of Elementary Education, NCERT
Illustrations and Design Team
Srivi Kalyan, Chennai
Anita Varma, Delhi
Taposhi Ghoshal, New Delhi
Vandana Bist, New Delhi
Rajiv Gautam, Street Survivors,
Murshidabad, West Bengal
Raja Mohanty, Industrial Design Centre
IIT, Mumbai — Cover Design
2019-2020

MATH-MAGICMATH-MAGICMATH-MAGICMATH-MAGICMATH-MAGIC
What is inside this book?
1. Where to Look From 1
2. Fun with Numbers 13
3. Give and Take 29
4. Long and Short 46
5. Shapes and Designs 60
6. Fun with Give and Take 76
7. Time Goes On....... 95
8. Who is Heavier? 113
9. How Many Times? 122
10. Play with Patterns 144
11. Jugs and Mugs 153
12. Can We Share? 160
13. Smart Charts! 177
14. Rupees and Paise 190
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1
Where to Look From
Have you looked at things from different
sides?
Do they look the same or different?
Look at the pictures drawn here. How
does the table look from the side?
Which picture is from the top?
Will they look like this?
Some pictures are drawn below. Imagine how these things will
look if seen from the top.
Our teacher told us to draw a picture of a
car. We all drew the car differently. Next
day, when we showed our pictures to each
other, we were very excited. But Anshul
started laughing. He was looking at
Dheeraj's drawing of a car.
1
Anshul said — it looks like a small box
kept in a bigger one. Then Anshul
showed his drawing to Dheeraj.
Dheeraj said he had looked at the car from the terrace. Do
you think his funny drawing is right?
Both of them drew the picture of the same
car. But the drawings look different.
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A. A cat is peeping into
a classroom.
Can you help her find out
where the teacher is?
Staircase Staircase Table
Chair Pencil
C. Draw top views of a few things and ask your friends to guess
what they are.
B. Here are some pictures. Find out from where you have to
look to see the things this way.
Bus
Practice Time
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3
You can also try and use the dots given below to make patterns.
Two examples have been drawn here.
Rangoli
I am Meenakshi.
I belong to Tamil Nadu. We
make Kolam patterns every
morning. They are made by
using dots.
Have you ever made
a rangoli?
My friend Meenakshi
makes beautiful floor
patterns.
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Make Other Patterns Yourself
1. Copy these shapes on the dot grid. Note that some lines in
the shapes are straight and some are not.
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2. Use the dot grid given below to draw your own designs and
shapes.
3. Complete these figures to make squares and rectangles.
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4. On the dot grid given below, draw the following:
a) a kite b) a leaf c) a flower
d) a boat e) a star f ) a pot
Note for teachers and parents: Free play with shapes on a dot grid can help develop
children's understanding of shapes and symmetries. The chapter begins with
activities to show how 2-dimensional pictures can represent 3-dimensional objects
as seen from different perspectives. This is related to symmetries, an important
aspect of shapes further developed in Chapter 5.
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7
Tit for Tat
After a while the painter showed her the picture.
One day Amina met a painter.
Amina gave him a hundred-rupee note.
Can you
make
my picture?
Yes, sure!
I charge
Rs 200
for it.
Amina!
How do
you like
it?
But this is only
half !
The other half is exactly
the same. So just put a
mirror to get the complete
picture.
Now can I have
my money?
But this is
only half
the money !
The other half is exactly the same.
So just put a mirror next to the note
to get the full money! Ha, ha!
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8
The painter had made many such pictures in which he drew
only one half of the things. Draw the other half of these pictures
and find out what these things are. Try doing it with a mirror.
If you ask the painter to draw things which cannot be divided
into two similar mirror halves, then he cannot play the trick.
Draw three more such things which do not have similar mirror
halves.
Can we repeat the painter's trick, while drawing pictures of the
following?
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Give some more examples.
Mirror Halves
Look at the pictures given below. Does the dotted line divide
each picture into two similar mirror halves?
In two rectangles above, the dotted line cuts each into identical halves, but note that they are not
mirror halves?
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Using a dotted line, can you divide the following pictures into
two similar halves?
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Using such letters we can also make words which have similar
halves.
Can you guess these letters
from their halves?
Guess the words
by looking
at their halves.
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Making A Mask
You can make more such masks by taking help from the
following pictures.
1
2
3
4
5
Now, I can teach you
how to make the mask of a cat...
Take a piece
of paper.
Fold it along
the middle.
Cut it out
using a pair of
scissors.On one side draw
the figure.
Now open the
fold and make
the eyes, nose
etc.
Colour it and tie
a rubber band
on its back.
Your mask is
ready.
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13
Fun with Numbers
Radhika, Gauri, Vicky, Indra and Sunil were collecting Imli
(tamarind) seeds.
collected the most seeds.
Sunil will collect more seeds to be equal to Vicky.
If Radhika gets 6 more seeds, she will have .
How many children have more than 40 seeds?
needs 3 more seeds to have 50.
Sunil has 2 seeds less than 40 and has 2 seeds more
than 40.
13
2
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14
Can you guess
the number of
dots on me ?
And on me?
Dot Game
Guess the number of dots in the circle. Now count and check
your guess. Play this game with your friends by making circles.
See who can guess best.
Children need interesting exercises to help them with visual estimation of numbers – of things
arranged randomly and in symmetrical groups. Teachers could use other instances, such as
bundles of leaves sold in the market, the school assembly, designs on mats, etc. to make them
guess and estimate different numbers. In this book an ant has been used to show the child
that a guess or estimate has to be made.
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Has he completed
his century?
Dhoni on 96 ..... Only one
ball left.....will he complete his
century?........ And look at this !
W
hat a marvellous six !
Dhoni's Century
One-day match between India and South Africa in
Guwahati......., India batting first......
Fill in the blanks:
Dhoni scored 96 + = runs.
How many runs do these players need to complete a century?
Numbers are understood not by reciting them in order but by making associations in familiar
contexts. Here the idea of a century of runs is used. Teachers could add other examples from
children's lives to think about 3-digit numbers. Encourage them to speak about large numbers
even if they cannot read or write them.
Runs needed to
complete a century
Player 1 93
Player 2 97
Player 3 89
Player 4 99
Runs scored
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99-112 195-206
Number
(in figures)
Number
(in words)
99 Ninety-nine
100 One hundred
101 One hundred one
102
103 One hundred three
104 One hundred four
One hundred five
106 One hundred six
107
One hundred eight
109 One hundred nine
110 One hundred ten
111 One hundred eleven
One hundred twelve
Number
(in words)
Number
(in figures)
195 One hundred ninety-five
196 One hundred ninety-six
197 One hundred ninety-seven
198 One hundred ninety-eight
One hundred ninety-nine
200 Two hundred
201 Two hundred one
203 Two hundred three
Two hundred four
205 Two hundred five
206
Fill in the Blanks:
After 99
we go
on like this
See you
tomorrow
99 100 101 102
Oh! 206! Guess how many more
to make a triple century?
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Top Ten Scores in the Cricket World Cup
3 C.K. just missed his century. How many runs did he need to
make a century?
3 and scored almost equal runs.
3 scored a complete century, no less, no more.
3 Most runs scored by any batsman are .
3 and have a difference of just 1 run between
them.
3 scored 2 more than one and a half century.
A.P.J. 128
A.S. 100
C.K. 99
D.M. 162
K.S.P. 152
Player Score
M.D. 178
P.K. 105
S.T. 141
T.P.K. 112
V.V.S. 127
Player Score
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Easy
!Just
skip
in
tens.
Counting in 50's
Wow!Howdidyoudothat?
Counting in 10's
Finish
10
20 30 40 50 60
70
80
90
100
110
190
200
10
20
30
100
310
400
720
780
Count in fifty
up in a jiffy
50
50
50
50
550
650
750
850
200
250
350
500
How far can you go like this?
What is the biggest number you can call out?
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Colour the Numbers
744 810 45 401 54
555 374 171 261 159
656 140 179 891 16
195 155 410 159 685
454 136 60 74 699
800 445 642 202 943
Find these numbers in the above chart. Colour them.
Green
One hundred forty
Two hundred two
Two hundred sixty-one
Eight hundred
300 + 70 + 4
600 + 50 + 6
5 + 50 + 100
Red
Fifty-four
Sixty
One hundred ninety-five
Five hundred fifty-five
600 + 40 + 2
100 + 70 + 9
800 + 10
Yellow
Four hundred forty-five
Sixteen
One hundred fifty-nine
Six hundred eighty-five
600 + 90 + 9
70 + 4
1 + 90 + 80
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20
90
99
106
89
91
92
93
94 95
96
97
98
100
101
102
103
104
105
107
108
109 110
Gabru Bunny
Tarru
Jumping Animals
Gabru, Bunny and
Tarru are jumping all
the way. Gabru jumps on every 7th box, Bunny on every 5th
box, Tarru on every 4th box.
Gabru starts jumping from number 90.
Bunny starts jumping from number 99.
Tarru starts jumping from number 106.
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Hee! Hee!
All this
jumping is
tickling me.
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126 127
128
129
130
131 132
133
134
135
136
137
138
139
140
141
142 143
144
145
146
147 148 149
Bunny’s tenth jump is on number .
Tarru’s tenth jump is on number .
Gabru’s tenth jump will be on number .
Gabru and Bunny both jump on numbers 104, and .
Find out:
O Tarru and Bunny jump on numbers , ,
and .
O Is there any number where all three of them jump?
O Guess who will finish in the least jumps? In how
many jumps?
175
174
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Class, Jump!
Jump 2 steps forward:
104, 106, 108, , , , .
Jump 2 steps backward:
262, 260, 258, , , , .
Jump 10 steps forward:
110, 120, 130, , , , .
Jump 10 steps backward:
200, 190, 180, , , , .
Continue the pattern:
550, 560, 570, , , , .
910, 920, 930, 940, , , , .
209, 207, 205, , , , .
401, 402, 403, , , , .
Long way to
go!
Join in!
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23
Lazy Crazy Shop
This is the jungle shop. Lazy Crazy gives things only in packets
of tens, hundreds and loose items.
Find out how many packets of tens, hundreds and loose items
each animal will take. Fill in the blanks.
Loose
items
Packets
of 10
Packets
of 100
143
210
242
552
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Lazy Crazy also has a crazy way of taking money. He takes only
in notes, notes and coins. Now find
out how they will pay him for what they have taken.
Rs 420
Rs 143
Rs 242
Rs 55
Who am I? Match with the number.
a) I come between 40 and 50 and
there is a 5 in my name. 96
b) I have 9 in my name and am very close to 90. 150
c) If you hit a 4 after me, you score a century. 45
d) I am equal to ten notes of 10. 89
e) I am century + half century 87
f) I am exactly in between 77 and 97. 100
In this chapter several stories and exercises are used to help children understand the decimal
number system. The term 'place value', which often confuses children, has not been used at all.
Teachers could also find out about other locally used number systems, if any, especially while
working in tribal communities.
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How Many are these?
rupees
sticks
blocks
beads
rupees
100
10
100
Who am I?
There is no biggest number
Take any you can find
Add me to get the next one
To count, keep me in mind.
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I am Chanda Mama. I have so many friends which twinkle in the
sky. Yes, you are right! My friends are stars. One day all of
them came to my home. I started counting to see how many
friends had come. But my friends were too many. So to
remember their numbers, I did something like this —
Hello
everybody!
I counted one star and kept one card in my pocket.
for one star. for 2 stars.
for how many stars?
When I had 10 cards, I changed it with this card .
But my friends kept coming. So I had to count more stars. My
pockets were getting full. So when I had 10 cards like this I
changed it with a card.
Moon Mama Counts his Starry Friends
But I have so many, many, friends that my pockets kept getting full.
Just see how many cards I had.
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All right,
everybody in a
line. We'll play a game.
Yippee!
Which cards will I have in my pocket if I have counted up to...
a. 19
b. 21
c. 95
d. 201
e. 260
f. 300
g. 306
h. 344
i. 350
j. 400
2019-2020

Nice new
patterns
When I had cards in my pocket, I knew I had counted 20
stars. Now you tell me the number of stars counted in each case.
Write the answer in the blank space.
20
??
Guess how many starry friends I have in all... !!!
28
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29
Give and Take
I start from room 2. I add 10 to 2 to reach room 12 and paint
it. To add 10 to 2, we can go all the way to the right to 10.
Then up to 11, and one step right to 12.
This is one way to go from 2 to 12.
Is there a shortcut? Of course! Follow me.
We can jump up one row.
A jump from 2 to 12 is like taking steps.
3
I am Kittu. This is my home. Isn't it huge? It has
100 rooms. Help me in painting some of the rooms.
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Now try one jump up from 14.
14 + 10 = 24 .
Colour this room.
How will I go from 22 to 41? Jump from
22 to 42.
Then one step left. We can write it like this.
22 + 20 = 42
42 – 1 = 41
How many steps did I go in all?
You could also go this way:
From 22 take one step left to 21.
Then two jumps up to 41.
22 – 1 = 21
21 + 20 = 41
Find My Food
Try these on Kittu's home:
Hey! I have something more interesting for you.
Ma told me, there are sweets to eat in some rooms.
Help me find that room. The answers from the next page will
help you find that room. Mark them in my home.
a) 10 less than 34 is .
b) 53 – 20 =
c) 11 more than 31 is .
The 10×10 number grid is a useful aid for adding and subtracting two-digit numbers. Children
should be encouraged to try these operations mentally using the grid as often as possible.
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d) 11 less than 66 is .
e) 62 + 13 =
f ) 23 less than 89 is .
g) 10 and 40 more is .
h) 9 added to 28 gives .
i) The sum of 9 and 44 is .
j) Reducing 98 by 34 gives .
k) 4 and 37 more is .
l) Take 35 away from 83. We get .
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Is there a
shortcut to
do this?
66 – = 11
E.g., 47 = 37 + 10
37 + 9 =
65 – 30 = Will it be easier
to go to 46 + 20
first?
98 = + 50
36 = + 9
45 + = 99
+ 26 = 75
40 + = 76
57 – = 20– 21 = 35
= 87 – 30
= 46 + 21
Similarly how
will you do this?
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0123456789101113141516171819202112222324
Now look at the distances between these places (for kilometres
we write km).
O Agra Cantt. Railway Station to Taj Mahal – 5 km
O Taj Mahal to Agra Fort – 2 km
O Agra Fort to Fatehpur Sikri – 40 km
Now find from the map
O Which is farther from Agra Cantt. Railway Station — Taj Mahal
or Fatehpur Sikri?
shows the railway line.
Which of these is nearer to the railway line:
O Babarpur forest or Taj forest?
O Agra Fort or Taj Mahal?
Which is closer to the river Yamuna:
O Taj Mahal or the Railway Station?
Agra Cantt
Railway Station
Taj
Forest
Taj Mahal
Agra Fort
Babarpur Forest
To Fatehpur Sikri
RiverYam
una
MAP OF AGRA
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0123456789101113141516171819202112222324
The Long Tail Competition
The animals in this picture had a
competition. The animal who had the
longest tail won a prize. Now who do
you think won the first prize and
who won the second....? Just guess
the length of the longest tail.
Do I have
a tail?
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63
Chhotu Guddu Bunty Tinku
MeetaRaja
Edges and Corners
Meeta and her 5 friends were playing a game. Tinku was
blindfolded and asked to keep clapping as long as he wished
while the others would move round a table. The moment Tinku
stopped clapping, everybody would stop wherever they were.
The child who was not at a corner would be out. Then she
would be blindfolded.
a) Looking at the picture given above, can you tell who is out?
b) Where is Guddu standing?
c) Can this game be played around a round table? Why?
Many things around us have straight edges. For example:
edge
edge
edge
edge
edge
edge
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In the chapter Fun with Numbers, children would have made token cards. The same token cards
should be used for exercises in addition before children do written sums.
Tillu counted rabbits and deer.
There were 27 and 48
The old deer counted birds and squirrels.
There were 124 and 38
Let Me Tell You a Story..........
Once a baby lion lost his way in the jungle. He started crying
and called out for his mother. An old deer took pity on him. He
took him to his place. But the other deer got really scared. So
did their other friends — rabbits, squirrels and birds. A lion
among us! Oh, no! He will eat up our babies. The old deer
said — don't worry. I will warn him about this. In the morning
the baby lion thanked every one and started to leave. But a
rabbit said — wait, he cannot go like this! Let us count to see if
he has done any mischief. We should be 240 in all. Let's count.
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Number of
Number of
we get fifteen s
Ten s make one and
we are left with five s
Now putting together all the s,
we get seven s
So total number of and = 75
Putting all the s together,
Let's add and find out how many deer and rabbits were
there...
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38
Can you guess now,
if the baby lion will go back home?
Has the baby lion eaten up any animal?
Then putting together
the s and lastly the
s we get
Number of and
Number of and
Number of
Number of
Similarly we add the number of birds and number of
squirrels.
So together birds and squirrels were 162,
and deer and rabbits were 75.
The old deer said — we were 240 in number, now how many are
we in all?
To find out, do the addition in the box below:
Putting all the s together
first and grouping them
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39
First day - 270 bulbs
Second day - 123 bulbs
270 + 123
Is the sum more than
350
or less than 350?
I think..
270 and 100 is 370?
The sum is more than
350.How many
altogether?
Solution:
Bulbs made
on first day
Bulbs made on
second day
Sum
How Many Bulbs?
1. A factory made 270 bulbs on the first day.
On the second day it made 123 bulbs.
How many bulbs did the factory make altogether?
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40
Solution:
Sum
237 + 153 = ?
Is the sum more than 400
or less than 400?
2. A shopkeeper Rafi had 153 candles. Paras gave him 237
more candles. How many candles does Rafi have now?
Work out the following story problems in the same way.
Read each problem and say it in your words.
Guess the answer before writing it.
A. A train compartment is carrying 132 people. Another
compartment is carrying 129 people. In all, how many people
are there in both the compartments?
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41
B. Shanu found 138 pebbles.
Karim found 44 pebbles.
How many pebbles did they find
in all?
C. A teacher kept a note of which fruits students like in her
school. This is what she found:
Find out:
(a) How many students in the school like oranges?
(b) How many students in the school like mangoes?
(c) Altogether, how many students are there in the school?
(d) Is the number of girls more than 350 or less than 350?
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Guess...
To win India needs
(a) more than 100 runs
(b) less than 100 runs
Cricket Match
In a cricket match, Sri Lanka made 235
runs.
India has made 123 runs. How many
more runs does India need to win?
To win India must make 236 runs.
Runs India needs to win:
236 – 123 = ?
Fun with Give and Take6
Runs to win
Runs by India –
Runs needed
Let's subtract
by first taking away s
from s
To win India must make 113 runs
So we are left with
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43
If you add all the numbers in the first
box, you will always get 59.
Puzzle?
Work out four different ways to write the numbers.
Can You Solve this
Write the numbers 1, 2, 3,
4, 5, 6 in the circles, so that
the sum of the numbers on
each side of the figure is 12.
19 - 5 6 - 15
4+20
7 - 3
6
-
101-75-4
20 - 99 + 1219 - 320 - 17
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How much more money should the shopkeeper give Nabeela?
The shopkeeper had to give Nabeela Rs 118.
So tokens left are
Now take away s.
Only one left.
From fifteen s take
away seven s. Only
eight s left.
Now take away s.
Only one left.
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a)
b)
Card Game
One day Bubbly and Gopu were playing. Bubbly gave three
number cards to Gopu. He arranged the cards in two ways.
Bubbly arranged
them this way:
Isn't it interesting?
You can also play it. Here are the cards for you. Work out the
combination. Place the cards in the right boxes.
Can you arrange these cards
other than these two ways?
50 70 20 50 20 70
30 42 12 30 42 12
_
_
=
=
_
_
=
=
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46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
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0123456789101113141516171819202112222324
F In how many steps will
Dorji cross the road?
F How many cups can be
placed in a line on this
table?
F How many pots can be
placed to reach the tree
branch?
F How many shirts can be
hung on this wire?
How Many?
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48
How Much is a Centimetre (cm)?
The matchstick is 4 centimetres long.
The die is 1 centimetre from every side.
The lizard is 13 centimetres long.
The leaf is centimetres long.
The wax colour is centimetres long.
Now, look at a scale that you find in a geometry box. How many
centimetres does it have?
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0123456789101113141516171819202112222324
The small scale that you mostly use in school is like this one.
Is it easier to start measuring from the 0 mark? Look at the
things drawn near the scale and find out their lengths.
F What are the little lines on the scale used for?
F Look for things that are
F About 10 centimetres long
F Between 10 and 20 centimetres long
F Less than 1 cm long.
F Draw some of them here.
Mouse! Where
are you?
I
am
here.
0 1 2 3 4 5 6 7 8 9 10 11 13 14 1512
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50
How Big is My Hand?
Measure the length of your
thumb and your little
finger. Use the scale on
this page.
Which is longer? Thumb or
little finger?
Bring a measuring-tape to
your class.
Guess the length of different parts of your body and check if
your guess is correct. You can use a scale, string, measuring-
tape etc.
Think – How will you know the number of centimetres if
you measure with a rope, shoe-string, thread etc.?
0 1 2 3 4 5 6 7 8 9 10 11 13 14 1512
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0123456789101113141516171819202112222324
Compare your measurement
with your friends'.
Who has the biggest head
and who has the smallest
head? ,
Who has the longest hand
(from middle finger to wrist)?
Which is longer? Your ear or
your nose?
Is any of your nails more
than 1 centimetre long?
Nose centimetres centimetres
Around the wrist centimetres centimetres
Around the head centimetres centimetres
Ear centimetres centimetres
Hand (tip of middle centimetres centimetres
finger to wrist)
My measurement My friend's
measurement
0123456789101113141512
0 1 2 3 4 5 6 7 8 9 10 11 13 14 1512
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52
Gibli and the Grains
Ant Gibli has to reach the grains. She is looking for the shortest
road. Can you tell her which is the shortest?
Can you draw a road shorter than these? What is the length of
that road?
It is more important for children to be able to get an estimate of a metre as related to known
things, such as, their own heights, rather than do tedious exercises of converting metres to
centimetres, etc. Children at this stage may not be able to perceive of bigger units such as a
kilometre. They must be encouraged to speak of a kilometre in the context of a story or narrative.
The Map of Agra is an exercise with a narrative involving children, with familiar images (icons) to
help the initial understanding of mapping in 2 dimensions.
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0123456789101113141516171819202112222324
I want to make
a long kurta.
Take 2 metres cloth
for your kurta.
And how many
metres for a long
skirt for me?
You need three
metres!
Ametreisequalto100centimetres
Let Us Make a Metre-rope
You must have seen shopkeepers measuring cloth with a
metre rod.
Use a metre rod and a rope.
Make a knot at one end of the rope.
Keep the metre rod with the rope.
Mark 1 metre on the rope and make
a knot there.
Now the length between the two knots is 1 metre. This is
your metre-rope.
If you don't get a metre rod use a measuring-tape and mark 100
centimetres on the rope. 100 centimetres are equal to a metre,
so you get the metre-rope.
How Long is a Metre?
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54
Guess and Check
Activity 1
C Find some things that look 1 metre long.
C Use your metre-rope to find which of these things are more or
less than 1 metre.
Activity 2
Some Class III children
have marked a 1 metre
height on the wall of their
class.
You can also mark 1 metre
on your class wall.
Name of the thing More than Less than
1 metre 1 metre
Length of table – –
Width of table – –
Width of door – –
Length of door – –
– –
– –
– –
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0123456789101113141516171819202112222324
Now make a chart of the heights of your friends.
To measure the centimetres, you can use your small scale.
Shambhu Taller 4 centimetres
Taller/Shorter/Equal
to 1 metre
How many centimetres more
or less than a metre
Name
0123456789101113141512
Let me see if I
am also taller
than a metre
Yahoo! I am 4 cm
more than 1 metre
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This activity
should take only
a few minutes.
to blink my eyes to gulp my medicineto snap my fingers
for fruit to fall from a tree
Takes seconds
Think of some other things, some faster and some slower. Make
a long list.
Takes months
to grow wheat (from seed
to big plant)
to change from summer
to winter
for a baby to come out of
its mother's stomach
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Clap! Clap! — Before you Catch
Play this game
Throw a stone into the air. Clap
once before you catch it.
Now try to clap 2 times before the
catch.
Try more claps. How many times
can you clap before you catch the
stone?
Ta Thai — Different Claps
Clap 2 times and say 1 2
Keep clapping 1 2, 1 2, 1 2, ........
or say Ta Thai, Ta Thai, Ta Thai, ........
Also stamp your feet Left Right, Left Right, Left Right,.....
Now clap with three beats 1 2 3, 1 2 3, 1 2 3, .......
Say: Ta Thai Tut, Ta Thai Tut, Ta Thai Tut, .......
Can you stamp your feet Left Right Left, Left Right Left, ......
How many of you can speak and stamp at the same time?
Find Out
Have you heard people playing a tabla
or the drums? Find out a few different
beats they play. Also ask what 'bols'
they say for the beats they play.
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58
Height
of a child
Length of an
earthworm
Width of a
finger nail
Length of a
Sari
25
27
H
ome School
Distance from home
to school
Match the Correct Length
Draw lines to match each picture with how long it can be.
2 kilometres
5 metres
10 centimetres
1 centimetre
1 metre
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Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
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Have Fun with Shapes
Colour the clown following the directions given below :
Triangles Red Squares Yellow
Rectangles Blue Circles Green
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How many triangles are there in the following figures?
Find the biggest rectangle
in the figures given below.
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The True Story of Pedki Devi
My Time Line
My name is Pedki Devi. I live in a village in Dhanbad district
(Jharkhand). I never got a chance to go to school. I remember that
when I was 5 years old I broke my foot. I had climbed a tree to eat
the jamun fruit. But the branch broke and I fell down. My foot still
hurts in winter.
While grazing our goats we often got busy in playing. Once at the
age of 10 years I got a big scolding — I had lost one goat! At the age
of 15 years I was married. My husband was much older than me. My
first daughter was born three years after my marriage. Later I had
three more children when I was 20, 22 and 24 years old.
Time passed very fast then. I was busy with my farm, housework and
looking after my animals. But at the age of 35 years my world came
to a stop. My husband fell ill and died. His brothers tried to take
away our farm. They beat me badly and said I was a witch! Some
good people saved me. We fought a case against those who beat me
up. At the age of 40 years I saw a police station for the first time.
When I was 45 I learnt to read and write. 2 years later I got my
eldest daughter married. Now I am 50 years old. I enjoy playing
with my grandchild. Two of my children are studying in school.
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Other things have curved edges. For example:
a) Look around you and identify things with straight and
curved edges.
b) Do the things with straight edges have corners?
c) Do the things with curved edges have corners?
d) Try to find things which have both straight and curved edges.
Activity Time
1. Take a rectangular sheet of paper.
2. Count its corners.
3. Now fold one of its corners.
a) How many corners does it have now?
b) How many corners will you get by folding
i) 2 corners
ii) 3 corners
iii) 4 corners
c) Can you fold this paper in such a way that it has only
three corners? You are allowed only two folds.
What shape will you get?
4. Repeat the activity with a square sheet of paper.
edge
edge
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5. Can you fold all the corners of the square sheet in such a
way that the number of corners remains unchanged?
Look at the following table and tick ( ) the names of things
that have corners. Also count the number of edges and corners
in each of them.
In the following figures, tick ( ) those which have corners.
Do these figures have curved lines?
Using only straight lines, can you draw a figure which has
no corners?
Name of
thing
Whether it has
corners
Number of
edges
Number of
corners
Die Yes 8
Ball
Eraser
Egg
Sheet of paper
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Tangram
The tangram is an old Chinese puzzle. From the pieces of the
tangram, we can make many shapes of animals, people and
things.
At the back of the book you will find a
square like the one in this figure. Cut it
out carefully and cut the pieces. This
set of five pieces is called the 5-piece
tangram.
Use these five pieces to make the
following figures:
1
2
3
4
5
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HURRAY!
Pumpkin Tomato 'Panga'
This is the playground where tomatoes come to play every day.
They love playing on the see-saw. One day a big pumpkin comes
and sits on one side of the see-saw. When he does not get up
for a long time, the tomatoes decide to sit on the other side and
lift the pumpkin up so that he falls off.
The little tomatoes start climbing on to the other side...1, 2, 3,
4, 5 ....... 25. Huh! The pumpkin is still sitting and laughing.
So, the big tomatoes decide to help. The little ones get down
and make way for the fat ones. 1, 2, 3, 4 ..... 20.
Yeah! The pumpkin is up in the air. It shouts — Bring me down,
bring me down please!
'Panga' is a colloquial word which gives the sense of a problem or a quarrel. It has been used
deliberately because children can find it amusing.
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Try making
these shapes.
Now try making the following shapes
using only the pieces written here:
i) Use only triangles
ii) Use pieces 1, 2, 3
and 5
iii) Use only two triangles
iv) Use pieces 1, 2, 3,
4 and 5
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Wow!
So many
colours !
So many shapes !
Circles, triangles...
See the patterns !
Weaving Patterns
Golu and Binu went to the market with their aunt. They saw
many rugs (durries).
E Which geometrical shapes can you identify in these borders?
Draw them in your notebook.
E Is any shape repeating in a particular pattern? Which ones?
E Are the shapes made of (i) Curved lines
(ii) Straight lines
(iii) Both curved and straight lines.
E Look at your clothes, your mother's saris/shawls, rugs and
mats. Can you identify some patterns? Draw them in your
notebook.
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Floor Patterns
Have you ever seen a floor which has designs?
Do you know how these designs are made? These designs are
made by covering the floor completely with small tiles that fit
into each other without any gaps.. For example look at the shape
of this tile and see how it fits.
Now look at this tile with six sides.
See how tiles of this shape can cover the floor completely without
any gaps.
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Each bag of mud is your half-kg weight. Use it to weigh some
other things around you.
E Make a list of
i) Things weighing less than half kg.
ii) Things weighing more than half kg.
D. Use your balance to find which of the following is heavier —
i) A water bottle or a cricket ball
ii) Your shoe or your pencil box
iii) Your Maths book or Hindi book
iv) Your bag or your friend's bag
E. Weigh 1 kg of mud or sand. Divide it equally into 2 bags. Use
the balance to check if both the bags have equal weight.
Different activities will help children to guess and estimate weights of familiar things they see at
home, at the grocery shop, etc. Guessing the weights of animals is an enjoyable exercise and
helps them get a feel of larger weights. Teachers must bring a balance to class and give them a
chance to weigh things themselves.
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4. Khushboo and Hariz live in Agra. One day they went to
see the Taj Mahal. The floor had the pattern shown below:
What do you think? Discuss with your friends.
3. Complete this pattern. Compare it with the pattern on page
70 which also uses six sided shapes. What is the difference
between the two?
I can see two
different tiles in
this pattern.
I think only one
type of tile has
been used.
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Tiling Time
The patterns below are made from this tile.
In this pattern three colours
have been used to make it
look like steps.
By using two colours it
becomes a different pattern
of blue and yellow flowers.
Use different colour combinations to make your own patterns.
Have you seen this shape in any
other design — on a wall, a dress,
on a basket, a mat etc.?
I've seen a mithai
(sweet) of this shape!
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Treasure Hunt
Franke and Juhi's mummy has hidden a surprise gift for both
of them. But she wants them to find out through a treasure
hunt. She has written some instructions here. Can you help
Juhi and Franke in finding their gift?
a) Start from the tallest tree.
b) Go forward on the pathway.
c) From the sixth tile, turn left.
d) After moving a few steps again you will find a plant on your
right hand side.
e) Colour the dress of the child playing closest to this plant.
f) Start moving again from the plant.
g) On the fourth tile, turn left again.
h) On the way, you will find the corner of the fourth tile is
broken.
i) You will find a bat and a ball lying on the ground. Don't pick
them up, just circle them.
j) Move ahead and turn right.
k) You will find a mango tree. A few mangoes can be seen on
the tree. Colour 11 mangoes on the tree.
l) Also draw some grass near the mango tree and start moving
again on the pathway.
m) When you go straight, you will find a house.
n) Behind that house there is a bag. Open it and you will find
something sweet in it! Can you tell what their mother has
kept in the bag?
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Understanding of space will be facilitated if the treasure hunt worksheet is done in the class. This
task will enhance skills of children in identifying positions (up, down, front, behind), distance
(near, far), size (tall, small), corners and shapes. It will help if more such treasure hunts are given
to children as an activity.
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Money in
Geeta's purse
Cost of book –
Try it Yourself
Geeta had Rs 368 in her purse.
She bought a book for Rs 123.
How much money is left in her purse?
Money left in her purse is Rs 368 – Rs 123 = ?
The teacher should discuss with students which number is to be placed above and why.
(a) more than 200
(b) less than 200
Guess...
Money left in Geeta's purse is
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Money
Nabeela had
Now we have fifteen s
We cannot take seven s from five s
So borrow
is
Cost of
Ghee –
–
Can You Help Nabeela?
Nabeela's mother sent her to the market to buy some things.
She gave her Rs 245. Nabeela bought 1 kg ghee for Rs 127. The
shopkeeper gave her back Rs 98.
(Kilogram is written as kg.)
Let's find out.
Did the shopkeeper give her
the right amount?
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Multiplication Table of 1
one time one is 1 × 1 = 1
two times one is 2 × 1= 2
three times one is 3 × =
four times one is × =
times one is × =
times one is × =
times one is × =
times one is × =
Multiplying Big Numbers
A. Two toffees were given to each student in the class. If there
were 34 students, how many toffees were given in all?
Total students present = 34
Each student gets 2 toffees.
So total number of toffees given is 34 × 2.
34x2 is 34 times 2
30 times 2 is 60.
So the answer is more than 60.
40 times 2 is 80.
So the answer is less than 80.
What is the answer?
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3. Reena noted the electricity meter readings of her house. Last
month's reading was 118 units. This month's reading is 193
units. How much electricity did she use in one month?
This month's reading
Last month's reading
She used units of electricity.
4. Khushboo bought a shirt for Rs 125 and trousers for Rs 165.
How much money did she spend altogether?
Bought a shirt for Rs
Bought trousers for Rs
She spent Rs
altogether.
1 9
1 1 8
3
1 6
1 2 5
5
–
–
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137
B. In a picnic 4 fruits were given to every student. The number
of students was 23. Find out the total number of fruits given.
Number of students in the picnic = 23
Fruits given to each student = 4
Total number of fruits = 23 × 4
Let us try if we can do this by Bharti's method.
Adding 80 and 12 gives 80
+ 12
92
So 23 times 4 is 92.
23 × 4 means 23 times 4
20 times 4 is 80.
The answer is also less than 100.
Can you tell why?
The activities given in this chapter are designed to develop children's conceptual understanding
of multiplication. The standard method for multiplying larger numbers may be efficient, but teaching
it too early may actually hinder learning. The method given here builds on children's growing
sense of two-digit and three-digit numbers. Children should also be encouraged to estimate the
result of the operation.
320
4
20 × 4
80
3 × 4
12
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Check Rashi's subtraction using addition. Give her a for
every right answer.
7. Fill in the missing numbers in the coloured boxes.
4 6 8
– 1 3 9
2 2 1
4 6 8
– 1 3 9
2 2 1
+
3 5 6
– 2 4 7
1 1 9
1 4 1
+ 2 4 3
3 8 4
+
+

3 8 4
– 2 4 3
1 4 1
If I take one more
mala she will have
40 beads left!
The teacher should encourage students to discuss and correct the wrong answers. Children love
to correct others' mistakes (for a change!) and also learn from this process.
7 8
3
5
–
6
6
3
0
–
2
4
2
4
– 3 8
2
2
1
1
–
3
7
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429+10+20
R
oom
466
–33
Room
Let's Deliver Letters
Postman Uncle is ill today. Let's deliver the letters for him.
The teacher should encourage students to solve the problems mentally using the above chart.
Write the correct room numbers on the letters. Then find the
rooms in the above building and circle them.
Make a circle on room 455.
430
+20
+13
Room
426
+38
Room
461
+25
Room
480
– 9
Room
467
+22
Room
430
+15
Room
456
–20
Room
436
410
+13
+11
Room
445
+10
Room
455 467
+11
Room
450
–19
Room
452
+18
Room
498
–23
Room
431
441
432
481
433
471
434 435
490
436 437 438 439 440
442 443 444 445 446 447 448 449 450
460
470
480
489
459
469
479
488
458
468
478
487
457
467
477
486
456
466
476
485
455
465
475
484
454
464
474
483
453
463
473
482
452
462
472
451
461
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Find the Missing Numbers
Look at the number patterns. Write the missing numbers.
a) 100, 200, 300, , , 600,
b)
c) 50, 100, 150, 200, , , ,
d)
e)
f ) 280, 260, 240, , , ,
g) 125, 150, 175, 200, , 250, ,
800 700 ? ? 400900
300 250 200 ? ? ?
25? 35 45 ? ?
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80 – 30 – 5
= 50 – 5
= 45
45 + 35?
45 + 30 + 5?
Mental Maths
B.
C.
D.
50
50
75
+
–
=
120
320 320
=
+
–
=
60
110
=
–
+
=
50
35
80
45 45
=
–
+
=
A.
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1. Indu's pencil is 15 cm long.
Jyoti's pencil is 8 cm long.
Whose pencil is longer?
How much longer?
2. Ask your Papa or Mummy
Price of 1 kilogram salt –
Price of 1 kilogram sugar –
Which one is more costly?
How much more does it cost?
3. Ajay cooked chapatis in 25
minutes. Then he made
daal in 15 minutes. How
much time did he take to
cook both things?
4. Chanchal sells school
sweaters. In 2 days she
sold some red, blue and
grey coloured sweaters.
Look at the above and answer the following:
(a) How many grey sweaters did Chanchal sell in 2 days?
(b) Did she sell more red sweaters than blue sweaters in 2 days?
Sweaters sold on first day
Sweaters sold on second day
38 66 74
40 23 89
Red Blue Grey
Practice Time
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88
(c) How many red and grey sweaters did she sell on the first
day — more than 120 or less than 120? Tick ( ) the right
answer.
more than 120 less than 120
(d) How many sweaters in all did she sell on the second day —
more than 140 or less than 140? Tick ( ) the right answer.
more than 140 less than 140
She looked at the prices and said to her grandpa —
(a) Ghee is Rs 102 rupees costlier than biscuits.
(b) Price of oil and ghee altogether is more than Rs 200.
(c) Price of ghee and 10 kg rice is less than Rs 300.
(d) Oil costs Rs 40 more than a pack of biscuits.
Is Sangeeta right? Mark ( ) or ( × ) in the box.
Can you find this without using paper and pencil?
5. Is Sangeeta right?
Sangeeta went to the
market with her grandpa.
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Story Problems
Nisha and Sonu were making story problems. Nisha said —
13 boys and 14 girls in a class. Sonu, can you make a problem
on it?
You can also make story problems with your friends. Look at
each picture and the words next to it. Write your problem
below it.
Sonu wrote There are 13 boys and 14 girls in a class.
How many students are there altogether?
A. 36 men and 52 women
waiting for their turn
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B. We have our mid-day meal in 20 minutes and play for
15 minutes.
C. The post office is 1 kilometre from Shahid's home and 2
kilometres from his school.
D. Bunty has read 27 books and Babli has read 34 books.
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Count to Subtract!
Dolma bought 4 dozen (48) bananas and gave one to each of
her friends. 13 bananas were left. How many friends got a
banana?
As you know, this can be found by counting forward from 13. It
is easier to count in jumps of 10. You can also use Kittu's home
shown on page 29 to solve these problems.
48 – 13
10 10 10 5
13 23 33 43 48
10 + 10 + 10 + 5 = 35
So 48 – 13 = 35
B. 60 – 45 = ?
45 50 60
5 10
5 + 10 =
So 60 – 45 =
C. 80 – 59
60 70 80
10 10
59
1
+ + =
So 80 – 59 =
D. 85 – 63 =
E. 84 – 69 =
F. 60 – 20 =
G. 90 – 50 =
A. 56 – 37 = ?
37 47 5756
10 10
10 + 10 – 1 =
So 56 – 37 =
70 80 90
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33333
33333
33333
33333 33333
33333
33333 33333
All the King's Horses....
Once there was a king who could count only up to 9. Up to
what number can you count?
The king loved horses. But he could never count all of them. He
kept them in such a way that he needed to count only up to 9
from each side.
How many horses in all did the king have?
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22222
5
22222
22222 5
5
22222 5
One day a visitor with 4 horses came there. It was getting dark
so he wanted to stay there at night. But the horse-keeper was
scared. If the king saw these extra horses he would be very
angry! The visitor said — do not worry. The king will never
know. So he arranged the horses like this:
How many horses are there now?
At night the king came to count the horses. Along each side he
counted 9 horses. Ah! That's fine – he said. Then he happily
went to sleep.
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44444
1
44444
44444 1
1
44444 1
(Based on a Tamil folk story from the book Numeracy Counts!)
What numbers are we?
If you add us both you get 100.
The difference between us is also 100.
In the morning the clever visitor tried another trick. He took
out his own 4 horses. But he also ran away with some of the
king's horses. He left the king's horses standing in this way.
How many horses are now left?
How many of the king's horses were taken away?
Puzzle
The silly king did not find
any horse missing. Can you
help him?
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Time Goes On......
As the sun sets Sumana wakes
up. What a lovely evening!
She washes her face fast in 2 hours
and runs out. She goes straight
to the bird's nest. She has been watching the
eggs for the last few months .
She was waiting for the baby birds to come
out. But before she can blink her eyes, in a
week a cat jumps on to the tree.
The mother bird cries loudly and Sumana rushes
to shoo away the cat. As the cat jumps, it hits
the big green mango. Dhum! ...
Dhum!
... In two days it is on the ground ! Oh, how sad! The mango is
still not fully ripe. It needed one more year to become sweet.
Suddenly Sumana's sister calls out — Are you still not hungry? Has your stomach
clock gone to sleep? Come and eat hot upma for dinner .
7
Ulta Pulta Time — This is a story with topsy turvy time.
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a bath
to boil milk
to stitch a shirt
to set curd
a school day
to knit a sweater
to weave a sari
for a banana to
become ripe
Takes hoursTakes minutes Takes days
How Long does it Take?
Have you seen someone knitting a sweater? Or someone weaving
a cloth? Do try to find out from a potter how
long it takes to make a pot. Also tell us if you
take hours or minutes to have your bath! (Is
it years since you last had a bath? Ha, ha!)
Think of many different things that can take
different times. Make your table as long as
you can.
Wasn't that funny? You must have guessed that the coloured
words are wrong. Choose the correct word from the box given
below and write it next to the wrong word.
days rises seconds morning
breakfast moment minutes week
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Bottles and Buckets
Get a 1 litre bottle (can be
an empty bottle of water,
oil etc.). Now collect some
bottles and a mug, jug,
glass, bowl, etc. at your
house. Use the 1 litre
bottle to check which of
these holds more than 1
litre and which one holds
less than 1 litre. Make a
small drawing if you like.
- Now look at the buckets in your house.
- Guess how many litres of water they can hold.
- Use a 1 litre bottle and check if your guess is right for all the
buckets.
bowl big cooking pot
Less than 1 litre More than 1 litre
Bucket My guess My measure
Bucket 1
Bucket 2
Bucket 3
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Form Number 5
Government of Kerala
Birth Certificate
This is to certifiy that this information is taken from the original record of birth which is in the
register for the year of
Name
Sex
Date of birth:
Place of birth:
Name of Father:
Name of Mother:
Date of Registration:
Registration Number
Date 05.08.2002 Signature of issuing authority
Birth Certificate
Look at the birth certificate of Bincy.
(1) 2/5/2002 shows that Bincy was born on 2 ,
in the year 2002.
(2) How old will Bincy be on 2 May 2008?
(3) How old will she be in the year 2052?
(4) On what date will she be eight years old? Write in numbers.
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Registration Number
Date Signature of issuing authority
Form Number _____
Government of ______
Birth Certificate
This is to certifiy that this information is taken from the original record of birth which is in
the register for the year _______________ of _______________
Name
Sex
Date of birth:
Place of birth:
Name of Father:
Name of Mother:
Date of Registration:
(5) How many months old was Bincy on 2 August
2002?
(6) How many years old is Bincy now?
(7) After how many months of her birth was the certificate
issued?
(8) What is the registration number of her certificate?
Find Out
When were you born?
Write your date of birth in numbers.
Do you have a birth certificate? Ask your parents and make
one for yourself.
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2017 2020 2019 2016 2021 2022
Calendar
Let us look at the calendar for the year 2018.
E How many months does a year have?
E List the months which have 30 days.
E List the months which have 31 days.
E How many days does the month of February have?
E How many days makes a week?
E How many weeks are there in July? Is it true for
all the months?
E In which month did you come to Class III?
E Make a circle on these dates in the calendar:
26th January
14th November
31st December.
Is there something special about these dates?
Fill in the blanks with the correct year:
1. Which year was it two years back?
2. In which year were you in Class II?
3. Which year will be the next year?
4. Which year will come after 3 years?
This chapter encourages children to look at different cultural contexts in which the idea of elapsed
time occurs in their lives. It is more important for them to be able to develop an intuitive estimate
of seconds, minutes, months etc. than to actually measure. The chapter also helps them to
understand the use of a clock and calendar through interesting exercises. Teachers could create
more such exercises related to number patterns and symmetries.
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DayName of the festival
Diwali
Pongal
Raksha Bandhan
Gandhi Jayanti
Milad-Ul-Nabi
Onam
Guru Nanak's Birthday
Guru Ravidas's Birthday
Christmas Day
Bihu
Date
November 7
January 14
August 26
October 2
November 21
August 25
November 23
January 31
December 25
April 15
Which Festival comes First?
Given below are some festivals we celebrate during the year.
Look at the calendar (2018) to find the days on which these fall.
4 Arrange the festivals in the order in which they come in the
year.
1. 6.
2. 7.
3. 8.
4. 9.
5. 10.
4 Which festival comes in the beginning of the year?
4 Which festival comes at the end of the year?
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February 2019
S M T W T F S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28
February 2019
5 6 7
12 13 14
19 20 21
Calendar Magic
Here is the calendar for the month of February 2019.
Let us mark a square on the calendar and see some magic.
Which is the number in the centre of the
square?
Join three numbers by drawing a line. The
line must pass through the number at the
centre.
How many such lines can you draw?
Add the three numbers on each of these lines.
What do you notice?
5 + 13 + 21 =
6 + 13 + 20 =
19 + 13 + 7 =
12 + 13 + 14 =
E Now look at the calendar of 2018. Also look for the present
month and draw any similar square in your notebook. Does
the magic work for these?
E Is this magic possible on a 10 × 10 number chart? Go to the
chapter 'Fun with Numbers' and check.
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March 2019
S M T W T F S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24
31
25 26 27 28 29 30
March 2019
Simple. Just multiply
the middle number by
5.
That's right!
How did you do
that?
Oh! that will take
some time.
The total is
75.
I can add five
numbers in the box
in a moment.
More Magic!
See if this magic works for other lines which have five numbers.
What about five numbers on a slanting line? Try this trick with
your family and friends.
Can you find other magic patterns in the calendar?
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1 3
7
18
24
Complete the Calendar
for August 2018
Colour all the Sundays in red.
On which day does this month end?
Write the number of days in this month.
What day is it on 13th August?
What is the date on the second Saturday?
Is the 21st a Sunday?
What is the day on the 29th? What will be the date on the same
day next week?
How many Thursdays are there in this month?
Find Out!
Which months in the calendar (2018) have 5
Sundays?
Is there any other day in any month which
comes 5 times?
Can there be 6 Sundays in a month? Why?
Ask such questions for the current month and also other months. Encourage students to discover
more patterns through a calendar.
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5
A
10 20 30 40 50
Age in years
1 2 3 4 5 6 7 8 9 10
Age in years
Some things that happened in her life are given below. Mark
these on her time line. For example, when she was 5 years old
Pedki broke her foot. A is marked at 5 on the time line.
A. Broke her foot
B. Lost one goat
C. Got married
D. Had her fourth child
E. First saw a police station
F. Learnt to read and write
G. Eldest daughter got married
E Mark on the time line when she was born.
E In the blank box draw a picture of Pedki as a new born baby.
E Make your own time line. Ask people around you and mark
at least one thing that happened in each year of your life.
E Make time lines of people you admire. These can be from
among your family, friends, teachers, etc.
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At eight o'clock
At six -thirty in
the morning
She goes to school.
Kusum gets up early
in the morning.
She brings water
from the well.
She cleans her house.
One Day in the Life of Kusum
Let's see what Kusum does every day.
Write down the time for each picture.
For some pictures the time is already written and you must
draw the hands on the clock. In others you have to write the
time shown by the clock.
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Math
Magic
She is studying in school.
She comes back from
school.
She takes lunch with her
brother and grandmother.
She plays with her friends.
She listens to a story from her
grandmother before she sleeps.
1 o'clock in the
afternoon
Five-thirty in
the evening
9 o'clock
at night
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On the clock What do you do at this time?In words
Time of the day
Now prepare a chart showing your own daily routine.
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Oh! The groundnuts look so
much more than the jaggery!
Who is Heavier?
Gur (jaggery) and Groundnuts
Shabnam loved to eat jaggery (gur) and groundnuts.
One day she bought 1 kg of jaggery and 1 kg of groundnuts.
(You know that kilogram is also written as kg.)
E Are the groundnuts really more than the jaggery (gur) in weight
or do they just look more?
(1) 1 kg popcorn or 1 kg sugar?
(2) 1 kg peas or 1 kg potatoes?
Go to the market and check if your guess is right.
Now guess, for which of these
you need a bigger bag:
8
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E How many small tomatoes do you
think could lift the pumpkin up?
- Ten
- Twenty
- Forty
E How many big mangoes
can balance the pumpkin?
E How many pumpkins can
balance you on the see-saw?
E Name some of your classmates who you think weigh
(a) Almost the same as you
(b) More than you
(c) Less than you
E How many books can you lift on one hand keeping your arm
straight?
Guess
Now guess:
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Double her Weight
Kunjamma's parents have a different way of celebrating
Independence Day because Kunjamma was born that day. They
buy sweets double of Kunjamma's weight and distribute them
among poor people.
When Kunjamma was born, she was 3 kg. Today is Independence
Day and Kunjamma is 5 years old. She is 28 kg now.
E Now guess her weight and the amount of sweets her parents
distribute every Independence Day.
Kunjamma's age Kunjamma's weight Amount of sweets
At birth 3 kg 3 + 3 = 6 kg
1 year old 9 kg
2 years old 13 +13 = 26 kg
3 years old 17 kg
4 years old
5 years old 28 kg
You can ask your parents
how much a 2-year old or
4-year old child could
weigh.
Guess your own weight
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Yum-yum Rice
Shugoto heard about a new dish on the radio. He wants to try
making it. When he notes down how to make it, he gets confused.
This is what he notes down —
(1) Pour 2 spoons of water in the pot
(2) Boil the water and add
- 1 pinch of daal
- half kg red chilli powder
- 1 bowl salt
(3) Now put a spoon of rice
(4) Add 2 peas and 8 glasses of mustard seeds
(5) Finally add 1 kg of onions
Mix everything and boil for 15 minutes.
But Shugoto feels there is something VERY wrong in the
amounts of everything!!!
E Help him match the things with their right amounts.
1 kg rice
half kg daal
peas
water
onions
salt
mustard seeds
red chilli powder
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Activity Time
A. Make a list of things bought at your home. Find out how
much of each thing is bought at one time. These things can
be rice, oil, chilli powder, sugar, milk, onions, ginger, etc.
Name of thing How much bought
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i) Your school bag
ii) Geometry box
iii) A brick
iv) A big pumpkin
v) Your pair of slippers/shoes
Bring a balance and a 1 kg weight to class. Check if your guess
was right.
B. Guess their weights and
match.
Guess which of the following things weigh more
than 1 kilogram? Which ones will weigh less than
1 kilogram (kg)?
C.
Less than 1 kg
400 kg10 kg
More than 1000 kg
80 kg 2 kg
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In which shop would you find the following types of weights?
Discuss with your friends.
Look for Weights and Balances
Make a trip to your nearest junk dealer, vegetable shop and
grocery shop. Have a look at the weights they use. Find out:
i) Who uses the biggest weight?
ii) Who uses the smallest weight?
Have you seen any of these balances?
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Give me your hand, hand, hand, .............!
How Many Times?
How many spiders?
One spider has legs.
In all, spider legs are 3 times
or + + =
or 3× =
Do you know this leggy fellow?
This is an octopus.
It lives in the sea.
It also has 8 legs.
So how many legs altogether do 5 octopuses have?
+ + + + =
or 5 times =
or 5 × =
9
Leggy Animals
There are 5 goats.
How many legs altogether?
4 + 4 + 4 + 4 + 4 = 20
or 5 times 4 is 20
or 5 × 4 = 20
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Find the Number without Counting
How many flowers in a flower bed?
It has 4 columns. Each column has 6
flowers. So altogether the flower bed
has 4 times 6 flowers,
6 + 6 + 6 + 6 = 24 or
4 × 6 = 24
Let's try another way. The flower
bed has 6 rows. Each row has 4
flowers. Altogether the flower bed
has 6 times 4 flowers,
4 + 4 + 4 + 4 + 4 + 4 = 24
or 6 × 4 = 24
In the same way, how
many bottles are these?
times = bottles
How many eggs?
times = eggs
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Practice Time
A. Rewrite using the + sign.
2 × 5 is 2 times 5 or 5 + 5
4 × 18 is 4 times or + + +
3 × 20 is times or + +
8 × 9 is times or + + +
+ + + +
B. Tell how many times!
9 + 9 + 9 + 9 + 9 + 9 = 6 × 9 = 54
4 + 4 + 4 + 4 + 4 = 5 × 4 = 20
8 + 8 + 8 = × 8 =
3 + 3 + 3 + 3 + 3 = 5 × =
30 + 30 + 30 = × =
7 + 7 + 7 + 7 + 7 + 7 = × =
12 + 12 + 12 + 12 = × 12 =
6 + 6 + 6 = × =
10 + 10 + 10 + 10 = × =
2 + 2 + 2 + 2 + 2 = × =
6 + 6 + 6 + 6 + 6 + 6 + 6 = × =
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C. Ramu bought 4 packets of biscuits.
Each packet has 4 biscuits. How many
biscuits did Ramu buy?
After children attempt word problems, there should be a discussion on how they arrived at their
answers. This will help children develop a conceptual understanding of multiplication.
D. There are 12 desks in a classroom.
Each desk has 4 legs. What is the total
number of legs of the desks?
E. Sabiha brought home 3 bunches of
flowers. Each bunch has 4 flowers.
How many flowers were there?
F. One rail coach has 8 wheels. How
many wheels in all in 6 coaches?
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How Many Times 2?
1 time 2 is 2 or 1 × 2 = 2
2 times 2 is 4 or 2 × 2 = 4
3 times 2 is 6 or 3 × 2 = 6
4 times 2 is or 4 × 2 =
5 times 2 is or 5 × 2 =
6 times 2 is or 6 × 2 =
times 2 is or × 2 =
times is or 8 × 2 =
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Jump with Me
1 × 3
5 × 3
2 × 3
3 × 3
4 × 3
9 × 3
6 × 3
7 × 3
8 × 3
13 × 3
10 × 3
11 × 3
12 × 3
14 × 3
15 × 3
Tarru Frog jumps
3 steps each time.
Which numbers will
Tarru touch?
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Show jumps with 4 steps
1 × 4
5 × 4
2 × 4
3 × 4
4 × 4
9 × 4
6 × 4 7 × 4
8 × 4
13 × 4
10 × 4 11 × 4 12 × 4
14 × 4 15 × 4
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Try jumps with seven steps
1 × 7
5 × 7
2 × 7
3 × 7
4 × 7
9 × 76 × 7 8 × 7
13 × 710 × 7 11 × 7 12 × 7 14 × 7 15 × 7
7 × 7
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Stick Play
Mithu had some sticks. She
arranged them like this:
1 time 5 = 5
2 times 5 = 10
3 times 5 = 15
4 times 5 = 20
Then she counted how many
times the sticks were crossing each other. She found that
4 times 5 = 4 × 5 = 20
Let's try making a 2 times table with sticks:
1 × 2 = 2
2 × 2 = 4
3 × 2 = 6
4 × 2 =
5 × 2 =
6 × 2 =
7 × 2 =
8 × 2 =
9 × 2 =
10 × 2 =
Children can be given 16 and 24 sticks to arrange and encouraged to try different arrangements
like 4 × 4, 2 × 8, 8 × 2 for 16 sticks and 12 × 2, 8 × 3, 4 × 6, 6 × 4, 3 × 8, 2 × 12 for 24 sticks.
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Shopping with Tables
How much do these things cost?
Now draw sticks to make the
multiplication table of 6:
4 toffees cost rupees.
[Hint: 4 × 2]
3 pencil boxes cost rupees.
10 pencil boxes cost rupees.
9 balloons cost rupees.
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5 toys cost rupees.
Practice Time
A. Complete the following:
2 × 7 = 3 × 9 =
4 × 9 = 5 × 2 =
5 × 8 = 3 × 10 =
10 × 6 = 2 × 8 =
5 × 9 = 10 × 8 =
B. Look at the patterns and complete them.
3, 6, 9, , , .
2, 4, 6, , , .
10, 20, 30, , , .
4, 8, 12, , , .
5, 10, 15, , , .
30, 60, 90, , , .
7 face masks cost rupees.
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C. Complete the multiplication tree
80
8×10
4×20
2×40
1×80
16×5
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D. How many in all?
5 The almirah has 4 shelves.
There are 5 books in each shelf.
How many books are in the
almirah?
4 × 5 = 20 books
E. Some multiplication facts:
8 × 3 = 5 × = 35
3 × = × 6 = 36
× = 42 10 × =
5 × = 40 × 9 = 36
× = 54 × 7 = 28
5 A shirt has 5 buttons.
How many buttons would
3 shirts have?
5 There are four fans. Each fan
has 3 blades. What is the total
number of blades in all?
5 A box contains 6 apples. How many
apples in all will seven boxes have?
5 How many corners would 4 triangles have?
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Just add the numbers in
the boxes, and you get
the answer 60 + 8 = 68
68 toffees in all.
See, 34 is 30
and 4. Right?
Bharti wrote
Next Bharti wrote
I know!
How can we
find 34 times
2?
What's
this?
30 times 2 is 60
and 4 times 2 is 8.
But what's the
answer?
Wow! That's
smart.
60
2 × 30
30 4
2
2 × 4
8
2
30 4
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Practice Time
A. Multiply:
22 × 3 = 43 × 2 =
21 × 4 = 24 × 2 =
11 × 5 = 30 × 5 =
20 × 4 = 23 × 9 =
26 × 4 = 38 × 2 =
25 × 3 = 24 × 5 =
35 × 3 = 48 × 4 =
32 × 5 = 58 × 2 =
B. First guess the answer and then
calculate:
5 A flower has five petals. A bunch of flowers
has 13 flowers. How many petals are there
in the bunch?

5 A book has 64 pages. What will be the
total number of pages in 8 such books?
5 Students stand in rows in the
assembly. There are six rows of
students. Each row has 17
students. How many students
are there?
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23 × 10 = 230
How many in 23 dozen?
Many things are sold by the dozen. For example, bangles and
bananas are often sold by the dozen.
Bharti wrote
20 3
10
2
1 dozen bananas means
12 bananas.
So 23 dozen bananas is
23 × 12 bananas.
5 A design has 3 flowers in it. A piece of cloth has 17 such
designs. How many flowers will be on the cloth?
23 is 20 and 3. And 12
is 10 and 2.
We can do it in
the same way...
How to find
23 × 12?
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Next Bharti wrote
And Bharti wrote 200
40
30
+ 6
276
So 23 dozen bananas is 276 bananas.
Now try doing 43 × 13
43 is 40 and 3
13 is 10 and 3
We write the numbers
in the boxes as shown.
20 3
10
2
200 30
40 6
20 × 10 3 × 10
20 × 2 3 × 2
40 3
10
3
400 30
120 9
40 × 10 3 × 10
40 × 3 3 × 3
We will add the
numbers in the
boxes to get the
answer.
That's correct.
23 × 12 = 276
Guess the
answer first.
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Add the numbers in the boxes:
400
120
30
+ 9
559
So 43 × 13 = 559
Practice Time
First guess the answer and then check it by calculating :
42 × 23 = 73 × 11 =
51 × 13 = 54 × 12 =
25 × 36 = 12 × 14 =
Multiplication Patterns
A. 9 × 1 = 9
9 × 2 = 18 1 + 8 = 9
9 × 3 = 27 2 + 7 = 9
9 × 4 = 36 3 + 6 = 9
9 × 5 = 45 4 + 5 = 9
9 × = + =
9 × = + =
9 × 8 = + =
Did you see the pattern in the 9 times table? What numbers are
adding up to 9?
Observing patterns in multiplication tables deepens the understanding of the number system.
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B. Complete the grid by multiplying the numbers
Look at the cross in your grid.
Add the numbers together from top to bottom.
3 + 6 + 9 = 18
Add the numbers together from left to right.
4 + 6 + 8 = 18
The total is the same.
Look for other such crosses and copy them in your
notebook.mplete the grid
× 1 2 3 4 5 6 7 8 9 10
1 1 2 3 4 5 6 7 8 9 10
2 2 4 6 8 10 12 14 16 18 20
3 3 6 9 12 15 18 21 24 27 30
4
5
6
7
8
9
10
84
3
9
6
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C. 5 Mark the numbers 1–10 in the same grid in one colour.
5 Mark the numbers 12–20 in another colour.
5 Similarly mark 21–30 in a third colour.
Do you see any colour pattern?
Fill this space with your
favourite multiplication
table.
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144
Play with Patterns
Look around you and list three things in which you find some
pattern.
Draw some patterns which you have found around yourself.
Patterns Around Us
In everyday life, we see many patterns.
For example, we see:
Barbed wire
Grills of a window
A snake
10
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She makes these designs by using blocks again and again. One day I got hold of
the blocks and made a beautiful design.
You will see that these designs have been made by using the
same block in different ways.
Can you see a pattern in the way each block is repeated?
.
Hello! I am Pallavi. I live in Jaipur. My city is
known for clothes with block prints. Have a
look at some of the block print designs made
by my mother.
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146
Pictures in a
Pattern
A A B A A B
I have made some
patterns of pictures. I
have used a rule for
each pattern.
The rule for this pattern is — There is one girl
after every 2 boys. Then this is repeated.
In this pattern there is one arrow up and one
down. Then this is repeated.
Practice Time
N Given below are some patterns.
Figure out the rule for each and continue the pattern.
a)
b)
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c)
d)
e)
f ) Morning, afternoon, evening, night, morning, ........
Growing Patterns
Can you see the rule and continue the pattern?
I have made a
new pattern.
But this pattern keeps
on growing. It does not
repeat.
So what? It
does have a
rule.
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148
Try these also.
N Ask your friends to continue the patterns made by you.
My Own Patterns
N Here is your space to make your own patterns:
i)
ii)
iii)
iv)
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Number Patterns
We have made some patterns with pictures. We can make
patterns with numbers too. Like 21, 41, 61, 81, 101, ...........
You know the next number, don't you?
This is a growing pattern. It can go on and on.
21, 41, 61, 81, 101, 121, 141, 161, ...........
A. Look for the rules and continue these growing patterns:
a) 51, 56, 61, 66, , ..........
b) 7, , 21, 28, 35, , ..........
c) 2, 4, 8, 16, 32, , ,
d) 12A, 13B, 14C, , .
B. Look at these growing patterns. Find out what to add to
each number to get the next one:
a) 1, 3, 6, 10, , , , ,
b) 0, 2, 6, 12, , , , ,
c) 1, 3, 7, 13, , , , ,
d) 2, 3, 6, 11, 18, , , , ,
This chapter helps children observe and understand patterns around them. They can be given
more examples of repeating or growing patterns to recognise the motif or basic unit which
generates the patterns. Making secret messages or codes also helps pattern recognition. As
their algebraic thinking develops, they will realise that the pattern created by the rule boy boy
girl is the same as A A B or ↑↑↓↑↑↓↑↑↓↑↑↓↑↑↓. Some interesting and important number patterns that relate
to mathematical operations are given.
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150
3W3H3E3R3E
3A3R3E 3Y3O3U
3I3N 3T3H3E
3C3A3N3T3E3E3N
Secret Messages
Amrita and Paritosh are writing secret messages.
Can you tell what they are trying to say?
These are two secret messages. Look for the patterns and find
the hidden sentences.
Now you also make your own secret messages.
1 I 2 L 3 O 4 V 5 E 6 Y 7 O 8 U
ATBHCIDS EBFOGOHK IIJS KFLUMN
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Even and Odd Number Patterns
Half these numbers are in yellow. What patterns do you
see in these numbers? Continue the same pattern and fill in
the blanks:
96, 98, , 102, , , , ,
How far can you continue this pattern?
These numbers have a special name. They are called even
numbers.
Do any of these even numbers end with 3 or 5?
What do even numbers end with?
Look at the pattern of numbers in blue. Continue the pattern
and fill in the blanks:
99, 101, , 105, 107, , ,
What do the numbers in blue end with?
91 92 93 94 95 96 97 98 99 100
81 82 83 84 85 86 87 88 89 90
71 72 73 74 75 76 77 78 79 80
61 62 63 64 65 66 67 68 69 70
51 52 53 54 55 56 57 58 59 60
41 42 43 44 45 46 47 48 49 50
31 32 33 34 35 36 37 38 39 40
21 22 23 24 25 26 27 28 29 30
11 12 13 14 15 16 17 18 19 20
1 2 3 4 5 6 7 8 9 10
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152
All numbers that end with 1, 3, 5, 7 or 9 are called odd numbers.
Write all odd numbers between 400 and 410.
Write all even numbers between 155 and 165.
If we add 1 to any odd number we get an
(even/odd) number.
If we add 1 to any even number we get an
(even/odd) number.
What do you get if you add an even number to an odd number?
Names in an Order
Adil has to arrange this list so that the names starting with A
come first and then come those with B, C, D and so on. Number
these names in the order in which they will come.
Jalaj is proud to have a special name. He says if you read it
backwards it is still the same.
Which of the following names have the same pattern? Mark .
Harsh, Anna, Kanak, Munna, Ongbi
Sharada Mahadevan Tsering Adil
Gurinder Baichung Harsha Raja
Narayan Kavita Warsha Elvis Jalaj
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Jugs and Mugs
Wedding in Bunny's Family
There is a wedding in Bunny's family,
a family of rabbits. Many guests are
invited — deer, monkeys, elephants,
cats, dogs, mice, foxes, camels,
mongoose etc. A special drink is
served to all the guests — one glass
each. Everyone finds the drink very
tasty but some small guests like
, cannot finish a full
glass. But is
able to finish his glass.
11
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I drink
so much water in a day but
all of it does not go out of
me. W
here does
it go?
Some others like , , ask for
more than one glass.
Now the trouble begins !!!
There are some big guests who go on gulping down glass after
glass...!
Bunny wants to guess who drank how much.
Help him fill the table. Have fun!
Summer day : glasses
Winter day : glasses
Can you guess how much water goes out of you?
Water In, Water Out?
Have you ever thought
like Laddu?
About how many glasses
of water do you drink in a
day?
Less than 1 glass
Between 1-5 glasses
Between 5-10 glasses
More than 10 glasses
Name of guestDrank how much
,
,
,
,
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Match the Right Pairs
About 12 litres
Less than ½ litre
About 5 litres
1000 litres
½ litre
Come on, guess!
(bucket)
(eye drops bottle)
(water suraahi)
(to measure milk)
(water tank)
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Whose Jug Holds More?
What are Naima and Jeetu doing?
If Naima pours one glass of water in her jug, it looks like this:
Naima thinks she will have to pour around 3 glasses of water to
fill the jug. What do you think?
If Jeetu pours one glass of water in his jug, it looks like this:
Whose jug holds more water?
How many glasses of water do you think Jeetu should pour
to fill his jug?
If Jeetu pours one more glass of water his jug will be around
full.
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A B
Naseem had to fill her bottle 16 times from the tap. But Abdul
had to fill his bottle only 8 times.
C Why did Naseem go more times than Abdul?
C Naseem's bottle can hold (twice/half/three
times) as much water as Abdul's bottle.
How Many Glasses?
Pot B holds 11 glassfuls of water. Pot A holds twice as much
water as pot B. How many glasses of water are needed to fill
pot A?
Filling Pots
Naseem and Abdul had to fill their pots each with water. Both
pots were equally big and heavy. So they went to the tap again
and again, filled their own bottles and poured water into the
pots.
In class, children need to speak about their own daily experiences of measuring liquids and
comparing the sizes of different containers. They must get many opportunities to use words like
'glassful', 'bucketful' etc. They will also get familiar with ideas such as 'half', 'twice', 'four times' the
amount of water, and a sense of roughly how much one litre is.
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Mark A, B, C on the right hole in the picture.
Which is the biggest pothole?
If jugs are used, hole A gets filled with 5 jugs. How many jugs
of pebbles are needed to fill hole B?
Filling Potholes
This is a small town near Kohima. There are some potholes in
the road. Before the rains come, children want to fill the holes
with pebbles. They bring pebbles in mugs of the same size.
Hole A gets filled with 9 mugs of pebbles.
Hole B gets filled with 18 mugs of pebbles.
Hole C gets filled with 12 mugs of pebbles.
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Can We Share?
How Many in Each Group?
N There are 10 butterflies.
They are in 2 groups.
There are 5 butterflies in each group.
12
160
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N There are laddoos.
They are in groups.
There are laddoos in each group.
N There are caterpillars.
They are in groups.
There are caterpillars in each group.
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N Draw 18 stars.
Put them into 2 equal groups.
N Draw 18 beads.
Put them into 3 equal groups.
There are stars in each group.
There are beads in each group.
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Share the Grains
Each baby has got 2 grains now. How many grains are
left?
She puts one more grain in each baby’s mouth.
All the grains are finished.
Then Mummy bird gives one more grain to each baby.
Mummy bird brings 12 grains.
How to distribute equally?
Mummy bird starts by giving 1 grain to each baby.
12 grains have been divided among 4 baby birds.
Each baby has got 3 grains.
12 ÷ 4 = 3
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Try These Now.......
N Gopu has 3 plates of jalebis.
Each plate has a different number of jalebis.
Now draw the jalebis on the plates below, so that each
plate has the same number of jalebis.
Plate A Plate B Plate C
How many jalebis are there altogether?
How many jalebis are there in each plate?
Discuss in the class how you found the answer.
Plate A Plate B Plate C
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Sharing them Equally
N Here are six bananas.
Here are three monkeys.
If they share the bananas equally, each monkey will get
two bananas.
6 bananas divided into 3 equal parts = 2 bananas each
If there are six bananas
6 ÷ 3 = 2
6 ÷ 2 = 3
and two monkeys,
each monkey will get three bananas.
Six bananas ÷ 2 = 3 bananas each
Give children the experience of sharing things equally and writing corresponding division statements.
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If there are 60 bananas and
two monkeys, how many will
each monkey get?
bananas.
N Five friends found 10
five-rupee coins on the
ground.
N Hari Prashad has 30 metres of rope.
He distributes it equally among his three
children.
Each child gets metres of rope.
If there is 36 metres of rope, how much
of rope will each child get?
And if there is 60 metres of rope,
how much will each child get?
Five friends found Rs 100. If they
share it equally, how much will
each get?
If there are 16 ten-rupee notes and four friends to share, then
16 ÷ 4 = and 4 × 10 = 40
so each friend gets rupees.
What if there are
600 bananas and
two monkeys?
They shared them equally.
Each friend got ten rupees.
50 ÷ 5 = 10
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Five books in the first shelf.
15 books are left.
How Many Shelves?
5 more books in the second shelf.
10 books are left.
5 more books in the third shelf.
5 books are left.
5 more books in the fourth shelf.
20 books have filled up 4 shelves
of the almirah.
20 books put into equal groups
of 5 each take 4 shelves.
I have 20 books. I can keep 5 books in one
shelf, so how many shelves do I need in
my almirah?
On this and the following page, division is done by making equal groups. For instance, here
equal groups of 5 books each have been made. This process is different from sharing them
equally (by distributing them into 4 shelves).
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N Now let us try this.
28 ÷ 4 = 7
If there are 28 buttons, and the tailor puts 7 buttons on
each shirt, there will be shirts with buttons.
28 ÷ 7 =
Here are 28 buttons.
A tailor puts 4 buttons on one shirt.
So now there are 7 shirts with buttons.
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Practice Time
1. Minku puts her 15 laddoos equally into 5 boxes.
(i) How many laddoos will there be in each box?
There will be laddoos in each box.
15 ÷ 5 =
(ii) If she uses only 3 boxes, how many laddoos
will there be in each box?
There will be laddoos in each box.
÷ 3 =
÷ 5 =
Each monkey has bananas.
2. Share 25 bananas among 5 monkeys. How many bananas
for each monkey?
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3. Share 12 balloons among 3 boys. How many balloons for
each boy?
÷ =
Each boy has balloons.
4. There are 21 candles. Put them equally in 3 boxes. How
many candles are there in each box?
÷ =
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7. These are 24 footmarks of goats.
So how many goats were there?
5. There are 18 socks.
How many girls can wear these socks?
6. Raj has 36 minutes to make
rotis. One roti takes 3
minutes. How many rotis
can he make in this time?
He can make rotis.
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8. Some girls are playing a game with both their hands.
The girls who are playing have 60 fingers altogether.
How many girls are playing this game?
9. Lakshmi has 27 kg potatoes to sell.
Three men came and bought equal amounts of potatoes.
Each man bought kg of potatoes.
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Jumpy Animals
A squirrel jumps 3 steps.
A rabbit jumps 5 steps.
A horse jumps 15 steps.
A kangaroo jumps
30 steps.
Use the path on the next page to find out:
1. In how many jumps will the frog reach 30?
30 ÷ 2 =
2. In how many jumps will the squirrel reach 27?
27 ÷ 3 =
A frog jumps 2 steps at a time.
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1
0
2
3
19
20
21
22
23
24
25
26
27
28
29
30
9
10
11
12
13
14
15
16
17
18
4
5
6
7
8
3. Which number will the kangaroo
reach in two jumps?
4. Who all will meet at the number 15?
, ,
5. Will the rabbit ever be at the number
18?
6. How many jumps of the rabbit equal
one jump of the horse?
7. How many jumps of the horse equals
two jumps of the kangaroo?
8. Which is the smallest number where
the frog and the squirrel will meet?
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18 ÷ 2 = 9
18 ÷ 9 = 2
16 ÷ 2 =
20 ÷ 2 =
÷ 2 = 7
÷ 2 = 10
8 ÷ = 4
÷ 2 = 5
Hint:
2 × 9 = 18
Hint:
5 × 2 = ? 20 ÷ 10 =
30 ÷ 10 =
40 ÷ 10 =
50 ÷ 10 =
40 ÷ = 4
÷ 10 = 8
÷ 10 = 5
÷ 10 = 3
÷ 10 = 2
60 ÷ = 6
10 ÷ 5 =
20 ÷ = 4
15 ÷ 5 =
40 ÷ = 8
20 ÷ 5 =
÷ 5 = 6
25 ÷ 5 =
÷ 5 = 3
35 ÷ 5 =
÷ 5 = 2
How Quick Are You?
NNNNN Divide into groups of 10
using 10 times table.
NNNNN Divide into groups of 2 using 2 times table.
NNNNN Divide into groups of 5
using 5 times table.
Encourage children to explore the use of multiplication facts for division through mental computation.
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NNNNN Try these.
Divide the clock face
into three parts so
that the sum of the
numbers in each part
is the same.
9 ÷ 3 =
18 ÷ 9 =
÷ 2 = 5
20 ÷ 5 =
12 ÷ 4 =
20 ÷ 4 =
12 ÷ = 2
4 ÷ = 2
14 ÷ 7 =
6 ÷ 3 =
÷ 2 = 7
÷ 2 = 3
15 ÷ 3 =
8 ÷ 4 =
15 ÷ 5 =
8 ÷ = 4
÷ 2 = 8
Puzzle
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Look at the different flowers in the
picture. Complete the table:
Flowers of Different Colours
Have you been to a park?
What coloured flowers did you see?
Were most of the flowers yellow
in colour?
Number
of flowers
Colour
of flowers
Blue
Red
Orange
Purple
13 Smart Charts!
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Draw the right flower. Write how many there are.
a) are the most in number. How many? .
b) are the least in number. How many? .
c) are more than
d) are more than
This chapter is an early introduction to data handling, an important area of mathematics. By the
end of primary school, children need to be able to collect and record data, to present it in the form
of bar charts and tables, to recognise patterns in the data and to draw inferences.Teachers can
take several interesting and even funny examples from chilldren's own experiences. Pictures
given here could also be used for different classification exercises, such as the number of petals
of flowers.
What do We See on the Road?
Look at the traffic scene in the picture and fill in the table.
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Can a horse without
a rider come in this
smart chart?
Answer the following questions.
a) In the picture which way of travel do you see the most?
b) Which way of travel (vehicle) do you see the least?
c) The number of people walking is more than the number of
d) The number of buses is less than the number of
How Many Times do You Get 6?
How manyWay of Travel
Walking (people)
Bicycles
Scooters
Have you
played any
games with
dice?
How many dots
are there on the
different faces
of a die?
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F Throw a die.
F Look at the number of dots you get on the face of your die.
F For each throw draw a mark / in front of that number in
the table.
F Throw the die 30 times and mark in the table each time.
For example, Rabia threw her die 30 times. She got five
times. In her table she marked:
a) Which face of the die did you get the most number of times?
b) How many times did come up? times
c) came up more number of times than
d) Compare your table with that of the student sitting next to
you. Do you find any difference in the two tables?
Now fill in the table:
/////
Number of times
( / for each throw)
Face of the die
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Also find out from
animals around you!
Find out from People Around You
1. Talk to people around you about their favourite sweets.
Fill in the table:
From the above table answer the following:
a) Most favourite sweet
b) Least favourite sweet
c) is liked more than
(Name of the sweet) (Name of the sweet)
d) is liked more than
e) is liked more than
f) is liked more than
Favourite
sweet
Number
of
people
Jalebi
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Should I make a smart
chart about smart
horses living together?
2. Ask your friends about the number of people living in their
homes. Fill in the table.
a) Most families have people living in their homes.
b) The smallest number of people living in a home is
c) The number of families having 4 people is
1 alone
2 people
3 people
4 people
5 people
6 people
7 people
8 people
..............
Number of people
living together
How many
families
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Food item
Number of
students
3. What have your classmates brought for lunch today? Find
out and note down.
a) Food item brought for lunch by the biggest number
of students
b) Food item brought by the smallest number of students
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Absent Students' Chart
Class Absent students
Class I
Class II
Class III
Class IV
Class V
Getting Smart with Charts
This board shows the number of students in each class. It also
shows the number of students present and absent.
F How many children in all are there in the school?
F How many children in all are absent on that day?
This is a chart to show the number of absent students. Each
absent student is shown by .
F In the chart show the absent students of Class V.
Attendance Board
Date 8/2/2007
Class Number of
students
Students
present
Students
absent
Class I 27 25 2
Class II 23 22 1
Class III 24 21 3
Class IV 22 18 4
Class V 25 23 2
Total
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185
Now look at the chart and fill in the blanks:
a) The class with the highest number of absent students is
.
b) The class with the least number of absent students is
.
c) The class with 3 students absent is .
d) The number of students absent in Class IV and Class V are
and .
How Long is Your Hand?
F Make a group of 4 friends.
F Cut strips from waste paper. The strips should be of the
same width.
F Measure the length of each student's hand with the paper
strip. Cut the strip and write the name of the student.
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Rohan, Jacob and Geeta also measured their hands. They stuck
their strips as shown.
Look at the picture and fill in the blanks:
a) The length of Jacob's hand is (more/less) than
Geeta's hand.
b) The length of Geeta's hand is (more/less) than
Rohan's hand.
c) has the longest hand.
d) has the shortest hand.
In the chart below stick the strips of all the friends in your
group. Keep some space between the strips.
Rohan8cm
Geeta9cm
Rohan Geeta Jacob
Jacob10cm
Lengthofhand
Lengthofhand
Names of students
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How many in your
class have never
had a ride on me?
Look at the picture and fill in the table.
Children coming to School
bus tractor bicycle rickshaw on foot
Numberofstudents
3 students are coming by a tractor. We write 3 in the table. We
also draw 3 faces on top of 'tractor' in the chart. Draw faces in
the chart to show how many children come by bus, bicycle, etc.
Number of
students
Way of
coming Tractor
3
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Fill in the blanks:
a) The most students come to school by .
b) The number of students walking to school is
(more/less) than the students coming on bicycle.
c) The least students come to school by .
So, isn't this a smart chart! By simply looking at it we can know
so much. Let us make more such charts.
Practice Time
Make your own smart charts about things around you.
Like —
F Which bird has the most
colours?
F Which is the animal which is liked
most as a pet?
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Use this table to draw faces in the chart below. Draw for
each child on top of the vegetable disliked.
F The most disliked vegetable is .
F The vegetable disliked by very few children is .
Which vegetable is most disliked? Ask your friends and complete
the table.
A Vegetable You do not Like!
Vegetable disliked Number of students
Numberofstudents
Vegetable disliked
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I have collected a
lot of coins. But I
don't have a purse.
Let's Make a
Money Purse
Rupees and Paise
D Take a sheet of paper and
make a fold at the centre.
D Fold the two corners 'A'
and 'B' to meet at the
dotted line.
D Now the sheet will look
like this
D Fold the top part of the sheet
backwards so that the back
of the sheet looks like this
and the front looks like this
Now it will look like this:
A B
C E
D F
D Place the front side of the sheet
up and fold the edges CD and EF
to meet at the dotted line.
14
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D Fold down the top along the dotted line so that the figure
now looks like this:
D Fold the back flap down and the money purse is ready!
Money for Our Purse
Collect different coins.
Keep a coin on a flat table. Place a
thin paper on it.
With one hand hold the paper
tight. Rub the tip of the pencil over
the paper softly to trace the coin.
Slowly the face of the coin will appear.
Cut out the traced coins and keep
them in your purse.
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Write the amounts of moneyWrite the amounts of moneyWrite the amounts of moneyWrite the amounts of moneyWrite the amounts of money
shown by the notes and coins.shown by the notes and coins.shown by the notes and coins.shown by the notes and coins.shown by the notes and coins.
One hundre one rupees
Now make notes by cutting paper and writing the value of the
note on each.
Money Game
# Use notes and coins to show the following amounts of money
(you can also keep some money in the purse you had made).
– Twenty-six rupees
– 4 rupees 75 paise
– 78 rupees
– 130 rupees
– 8 rupees 75 paise
– 53 rupees
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Shopping
You can visit this self-service
store.
A.Without using a pencil or
paper, find out the cost of:
F One ball and one toy car
Rs
F One notebook and two pencils
Rs
F Two bananas and a glass of
milk
Rs
F One doll and a ball
Rs
F One glass of lemon juice and a
packet of biscuits
Rs
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195
Self Service Store
Cash Memo
Item
Rate
per Item
Paise
Total
Rs
B. Find out the total cost of:
F One toy giraffe, one copy and a glass of lemon juice Rs
F One glass of milk, one packet of biscuits and a banana
Rs
F One notebook, two pencils and two erasers
F Two tops, three toffees and two bananas
C. What can you buy if you have a twenty-rupee note?
F 1 toy car, 1 lemon juice, 1 banana
F , ,
F , ,
F , ,
F , ,
D. You need to make a cash memo for the things you bought.
Before adding, first guess how much money will be needed.
Then find the total and check your guess.
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Monu prepared the following cash memos:
Check the cash memos and correct them if you find a mistake.
a)
F Add the following:
F Subtract the following:
E. You have 30 rupees with you. Find out how much
money will be left after buying the following items:
F One ball, one doll and one toy giraffe
Total cost . Money left .
F Two bananas, one pack of biscuits and two
glasses of lemon juice.
a)
Rs 12.50
+ Rs 13.00
Rs 25.50
– Rs 11.50
c)
c)
Rs 30.00
+ Rs 31.50
Rs 19.50
– Rs 7.00
b) Rs 55.50
+ Rs 14.00
b) Rs 103.50
– Rs 62.00
Self Service Store
Cash Memo
Item
Rate
per Item
Paise
Total
Rs
1 Ball
3 Pencils
5 Toffees
7
2.50
7
7
2
00
50
50
17 00
Self Service Store
Cash Memo
Item
Rate
per Item
Paise
Total
Rs
1 Toy car
3 Pencils
7 Toffees
1 Biscuit
6.50
2.50
.50
4.50
6
7
3
4
50
50
50
50
21 50
Self Service Store
Cash Memo
Item
Rate
per Item
Paise
Total
Rs
1 Toy car
3 Glass milk
4 Notebooks
3.50
5
15
10
20
00
00
50
45 00
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F Three notebooks, two pencils and two erasers.
Practice Time
A. Three friends wanted to buy a
cricket bat and ball.
Bina had Rs 48.50, Raman
had Rs 55.50 and Venu had
Rs 38.00. How much money
did they have in all?
B. Hari booked a railway ticket for
Rs 62.50. He gave a 100-rupee
note. How much money will he
get back with the ticket?
C. Gita and her friends went shopping. She bought things for
Rs 58, Rs 37 and Rs 22. Gita had a hundred-rupee note.
How much money should she borrow from her friends to pay
the bill?
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10 young children working in a
bangle factory were set free today.
A news reporter and the police
found them in a sad condition. The
factory made the children work
very hard. It paid them only Rs 80
a day.
The children are happy to go back
to their homes in their village. They
will go to a special school so that
they can learn to study like other
children their age. By making children work, the factory tries to
save money. The police will now take action.
D. Mumbai News
Children Freed from Factory
Let us see how much money the factory tries to save.
Money 1 older worker should get = Rs 513 a day
Money 1 child is paid = Rs 80 a day
On 1 person the factory saves Rs 513 – _____ = Rs 433 a day
On 10 persons the factory saves
Rs 433 × 10 = Rs _____ a day
Find Out
In your area are there shops or factories
where young children are made to work?
Talk to some of these children.
How much are they paid there?
Understanding of 'money' need not only be about buying or selling. Teachers can talk
about children's experiences of related issues, such as, wage and work etc.
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495 km
Train Journey
This train goes from New Jalpaiguri
to Guwahati. On its way, it stops at
New Mal, Alipurduar and Goalpara
stations.
The cost of a rail ticket to different
stations is given in the table.
57
175
366
495
New Mal 12.50
Alipurduar 28.00
Goalpara 49.50
Guwahati 62.50
Fare
(in Rs)
Distance from
New Jalpaiguri
(in km)
Station
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Yippee! we got our
train tickets!
Find the distance:
a) From New Mal to Guwahati
b) Between New Mal and Goalpara
c) From Alipurduar to Guwahati
d) Between New Mal and Alipurduar
e) From Goalpara to Guwahati
Find the cost of tickets:
a) Bhupen is going from New Jalpaiguri to Alipurduar.
What is the cost of his ticket?
b) Indira has to go from New Jalpaiguri to Goalpara.
How much does she pay for the ticket?
c) Debu, Shoma and Gobind are going from New Jalpaiguri to
New Mal. What amount will they pay for three tickets?
They give a Rs 50 note for the tickets. How much money will
they get back?
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1
2
3
4
5
1
2
7
6
3
4
5
A Page to Cut Out
7-piece tangram (p 67)
Cut these tiles and paste on a card. Make as many
copies as you want and cover the floor.
You can cut these out
and use as play money.
5-piece tangram (p 66)
Play
Money
Play
Money
Play
Money
Play
Money
Play
Money
Play
Money
Play
Money
2019-2020

Mathematics NCERT Class 3

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Mathematics NCERT Class 3