Free Printable Changing the subject of the formula

1.

When changing the subject of the formula, if the formula contains subtraction, then you are to use;

a)

inverse operation multiply

b)

inverse operation add

c)

inverse operation divide

2.

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

a)

$R=IV$

b)

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

c)

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

d)

$R=V-I$

3.

Make w the subject of

A = lw

a)

w = A/l

b)

w = l/A

c)

w = A - l

d)

w = Al

4.

Make r the subject:
C = 2πr

a)

r = C/2π

b)

r = C - 2π

c)

r = 2πC

d)

r = Cπ/2

5.

A=5ab make b the subject

a)

b=A/5a

b)

b=5Aab

c)

b=5Ab

d)

b=5a/A

6.

Make x the subject of the formula.

7x=y

a)

$x=\frac{y}{7}$

b)

x=7y

c)

x=7+y

d)

x=7-y

7.

Make x the subject of the formula:

a)

x = y - a

b)

$x\ =\ \frac{y}{a}$

c)

$x\ =\ \frac{a}{y}$

d)

x = ay

8.

w = mgh make h the subject of the formula

a)

w = mgh

b)

h = mg/w

c)

h = w/mg

d)

h = wg/

9.

Make m the subject of the formula.

36m=x^2

a)

$m=\frac{x^2}{36}$

b)

$m=x^2-36$

c)

$m=36-x^2$

d)

$m=\frac{36}{x^2}$

10.

Make a the subject of
a + b = c

a)

a = c - b

b)

a = b - c

c)

a = b + c

d)

a = bc

11.

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

12.

Make x the subject of the formula.

y=x+6

a)

x=y+6

b)

x=y-6

c)

$x=\frac{y}{6}$

d)

x=6y

13.

Make x the subject of the formula:

a)

x = y - a

b)

x = a - y

c)

x = y + a

d)

x = ay

14.

Make x the subject of the formula:

a)

x = y - a

b)

$x\ =\ \frac{y}{a}$

c)

x = y + a

d)

x = ay

15.

Make m the subject of the formula m - y = x

a)

m = yx

b)

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

c)

m= x - y

d)

m = x + y

16.

Make x the subject of the formula.

y=\frac{x}{3}

a)

x=3y

b)

x=y+3

c)

x=3/y

d)

x=y-3

17.

Make z the subject of the formula.

$5=\frac{z}{a}$

a)

z=5+a

b)

z=5a

c)

z=a-5

d)

z=5-a

18.

$p=\frac{w}{a}$ Solve for w.

a)

$w=pa$

b)

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

c)

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

d)

$w=p+a$ I

19.

Make w the subject of the formula

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

a)

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

b)

$w=sa$

c)

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

d)

$w=s+a$

20.

Make x the subject of the formula:

a)

x = y - a

b)

$x\ =\ \frac{y}{a}$

c)

$x\ =\ \frac{a}{y}$

d)

x = ay

Changing the subject of the formula

Total questions: 20

Worksheet time: 40mins

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