1. FORMULA
L E V E L 2
Application of Number Unit 1
Leigh McQuaid
2. L E A R N I N G I N T E N T I O N S
• Understand how to use simple formulae
• Substitute numbers and letters in simple formula
3. F O R M U L A
C = A - B
Where:
A = 5
B = 2
C = 5 – 2
C = 3
4. F O R M U L A
E = F + G
Where:
F = 205
G = 112
E = 205 + 112
E = 317
5. F O R M U L A
H = JK
Where:
J = 10
K = 3
H = 10 x 3
H = 30
When parts of the formula are side by side, we multiply eg.
H = J x K
6. F O R M U L A
L = MNO
Where:
M = 3
N = 4
O = 5
L = 3 x 4 x 5
L = 60
When parts of the formula are side by side, we multiply eg.
L = M x N x O
7. F O R M U L A
P =
Where:
Q = 20
R = 4
P = 20 ÷ 4
P = 5
The line in the fraction is a divide line, therefore:
P = Q ÷ R
Q
R
8. F O R M U L A
S =
Where:
T = 120
U = 20
S = 120 ÷ 20
P = 6
The line in the fraction is a divide line, therefore:
S = T ÷ U
T
U
9. F O R M U L A
A =
Where:
B = 28
C = 7
D = 3
A = 28 – 7 ÷ 3
A = 21 ÷ 3
A = 7
All of these methods can be combined
A = B - C ÷ D
B - C
D
10. F O R M U L A
E = FG - H
Where:
F = 2
G = 8
H = 6
E = 2 x 8 - 6
E = 16 - 6
E = 10
All of these methods can be combined
E = F x G - H
11. F O R M U L A
J = K(L+M)
Where:
K = 2
L = 11
M = 8
J = 2 x (11 + 8)
J = 2 x 19
J = 38
When there are brackets in a formular, work out that part first
J = K x (L+M)
12. L E A R N I N G I N T E N T I O N S
• Understand how to use simple formulae
• Substitute numbers and letters in simple formula
