Free Printable The Prisoner of Azkaban

1.

The password to the Chamber of Secrets

(a)

2.

Make a the subject of
a + b = c

a)

a = c - b

b)

a = b - c

c)

a = b + c

d)

a = bc

3.

Make a the subject of
a + b = c + d

a)

a = c + d - b

b)

a = b + c + d

c)

a = b + c - d

d)

a = c - b - d

4.

Make w the subject of
A = lw

a)

w = A/l

b)

w = l/A

c)

w = A - l

d)

w = Al

5.

Make x the subject of y = mx + 1

a)

x = (y - 1)/m

b)

x = y - 1/m

c)

x = y/m - 1

d)

x = my - 1

6.

Make r the subject:
C = 2πr

a)

r = C/2π

b)

r = C - 2π

c)

r = 2πC

d)

r = Cπ/2

7.

w = mgh make h the subject of the formula

a)

w = mgh

b)

h = mg/w

c)

h = w/mg

d)

h = wg/

8.

$dx+e=f$
Which expression represents the value of x in the equation:

a)

$x=\frac{f+e}{d}$

b)

$x=\frac{f-e}{d}$

c)

$x=\frac{d}{e-f}$

d)

$x=\frac{d}{e+f}$

9.

$IR=V$ $Solve\ for\ R$

a)

$R=IV$

b)

$R=\frac{I}{V}$

c)

$R=\frac{V}{I}$

d)

$R=V-I$

10.

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

a)

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

b)

$r=7-ax$

c)

$r=7+ax$

d)

$r=7ax$

11.

Make the subject x:
3x + y = 12

a)

y = -3x +12

b)

x = y + 4

c)

x = y + 12

d)

y = 3x -12

12.

Which of the following has "a" as the subject of the formula?

a)

b)

c)

d)

13.

Change the subject of the formula to t in the equation $v=\frac{5t}{2}$

a)

$t=\frac{2v}{5}$

b)

t=2v

14.

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

a)

r = -7

b)

r = - 4

c)

r = 8

d)

r = 7

15.

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

a)

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

b)

$r=7-ax$

c)

$r=7+ax$

d)

$r=7ax$

16.

Change the subject of the formula to a in the equation

v = u + at

a)

$a=\frac{v-u}{t}\$

b)

$a=\frac{v+u}{t}$

c)

$at=v-u$

d)

$at=\ v+u$

The Prisoner of Azkaban - Change the Subject

Total questions: 16

Worksheet time: 32mins

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