Form 2 IA3

Make a the subject of
a + b = c

• a = c - b
• a = b - c
• a = b + c
• a = bc

Make w the subject of 
A = lw

• w = A/l
• w = l/A
• w = A - l
• w = Al

Make r the subject:
C = 2πr

• r = C/2π
• r = C - 2π
• r = 2πC
• r = Cπ/2

V = u + at . Make a the subject

When  $a=4$  
Find:  $a+a+a$  

•  $3a$  

•  $3$  

•  $12$  

•  $64$  

When  $b=3$  
Find:  $b^2$  

• 3

• 6

• 9

• 12

When $c=2\ \ and\ d=4$  
Find the value of:  $cd$  

• 24

• 8

• 6

• 42

 $e=5\ and\ f=3\$ 
Find the value of:  $ef-f$  

• 12

• 50

• 10

• 48

 $z=2$  

Find the value of:

 $\left(3z\right)^3$  

• 24

• 54

• 216

• 18

Factorise 4x+12

• 4(x+3)
• 4(x+12)