Free Printable Year 9 - Changing the subject of a formula

1.

Make 'd' the subject given:
s = d ÷ t

a)

d = s + t

b)

d = 2s + 1

c)

d = st

d)

d = s - t

2.

Solve for 'r' if:
2r + 1 = 15

a)

r = -7

b)

r = - 4

c)

r = 8

d)

r = 7

3.

$ax+r\ =\ 7\ \ Solve\ for\ r.$

a)

$r=\frac{7}{ax}$

b)

$r=7-ax$

c)

$r=7+ax$

d)

$r=7ax$

4.

Solve for a.

a)

$a=pw$

b)

$a=\frac{p}{w}$

c)

$a=\frac{w}{p}$

d)

$a=w+p$

5.

$8x+4y=16$

Solve for y:

a)

$y=-8x+16$

b)

$y=2x-4$

c)

$y=-2x+4$

d)

$y=-8x+12$

6.

Solve for 'b' if:
(3b + 6) = 12

a)

b = 6

b)

b = 2

c)

b = ½

d)

b = ⅙

7.

$Make\ x\ the\ subject\ of\ the\ formula\ \sqrt{\frac{m}{x}}=n.$

a)

$x=\frac{m}{n}$

b)

$x=\frac{m}{n^2}$

c)

$x=\frac{n^2}{m}$

d)

$x=mn^2$

8.

Make p the subject of the formula $d=\frac{p}{1+p}$ .

a)

$p=\frac{d}{1+d}$

b)

$p=\frac{d}{1-d}$

c)

$p=\frac{1+d}{d}$

d)

$p=\frac{1-d}{d}$

9.

$S=\pi h\left(R+r\right)$

a)

$\frac{S}{\pi h}-R$

b)

$\frac{S}{\pi h}+R$

c)

$R-\frac{S}{\pi h}$

d)

$\frac{S-R}{\pi h}$

10.

Make the g the subject: $m=2c+g$

a)

$g=m+2c$

b)

$g=m-2c$

c)

$g=2mc$

d)

$g=2m-c$

Year 9 - Changing the subject of a formula

Total questions: 10

Worksheet time: 19mins

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