1.

Make a the subject of the formula

a s = 4 + 8u

a = ............................. (Total 2 marks)

2.

Make a the subject of the formula

2(3a − c) = 5c + 1

…………………….. (Total 3 marks)

3.

(a)

Expand and simplify

(x – y)

2

................................................ (2)

(b)

Rearrange a(q – c) = d to make q the subject.

q = .......................................... (3) (Total 5 marks)

The Winston Churchill School

1

4.

Make u the subject of the formula D = ut + kt

2

u = ................................... (Total 2 marks)

P = πr + 2r + 2a P = 84 r = 6.7

(a)

Work out the value of a. Give your answer correct to 3 significant figures.

a = ……………….. (3)

(b)

Make r the subject of the formula P = πr + 2r + 2a

r = …………………… (3) (Total 6 marks)

x= 6.

p−q pq 5

p = 4 × 10 4 q = 1.25 × 10 (a)

……………………………… (2)

(b)

Make q the subject of the formula

x=

p−q pq

q = ……………………………. (4) (Total 6 marks)

7.

The fraction, p, of an adult’s dose of medicine which should be given to a child who weighs w kg is given by the formula

p=

(a)

p=

3w + 20 200

3w + 20 200 to find the weight of a child whose dose is the same as an

……………………… kg (3)

(b)

3w + 20 p= 200 Make w the subject of the formula

w = ………………………… (3) The Winston Churchill School

3

3w + 20 A 200 = A + 12 (c)

Express A in terms of w.

A = ……………………… (4) (Total 10 marks)

8.

Make x the subject of 5(x – 3) = y(4 – 3x)

x = ..................................... (Total 4 marks)

9.

P=

n2 + a n+a

Rearrange the formula to make a the subject. a =..................................... (Total 4 marks)