# Find Percentages of Numbers, Quantities and Measurements

In this worksheet, students find percentages of numbers, quantities and measurements.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Define, Interpret and Compare Percentages

Difficulty level:

### QUESTION 1 of 10

This worksheet is about finding percentages of numbers, quantities, and measurements.

It is easy to find 10% of any number because 10 % =
 10 100
=
 1 10

Simply divide by 10

So 10 % of 192 is 19.2

10 % of 54g is 5.4g etc.

 When you know 10% it is easy to find 1% (÷10 again). 5% (÷ 2). 30% (× 3).

and then you can add any combinations together.

 Example: Find 43% of 212 m 10% of 212m is 21.2 m 40% of 212m is 21.2 × 4 = 84.8 m 1% of 212m is 21.2 ÷ 10 = 2.12 m 3% of 212m is 2.12 × 3 = 6.36 m

43% of 212m = 40% + 3% = 84.8 + 6.36 = 91.16m

 You can work out percentages on a calculator either by using the % key, or by multiplying the number by the required percentage and dividing by 100.

Work out:

32% of 58 =
 ?

Work out:

101% of 195 =
 ?

Work out

45% of 210 m

You must write "m" after your answer to specify that it's in metres.

Work out

55% of 400 sweets

(just write the number)

Work out

21% of 28 =
 ?

Work out

5% of £26 =
 ?

Work out

104% of 121 =
 ?

Work out

100% of 97 =
 ?

Work out

40% of 17kg =
 ?

Don't forget to write "kg" after your answer, to specify that it's in kilograms.

Work out

15% of £108 =

• Question 1

Work out:

32% of 58 =
 ?
18.56
EDDIE SAYS
10% of 58 = 5.8 1% of 58 = 0.58 5.8 + 5.8 + 5.8 + 0.58 + 0.58
• Question 2

Work out:

101% of 195 =
 ?
196.95
EDDIE SAYS
100% of 195 = 195 1% of 195 = 1.95 195 + 1.95
• Question 3

Work out

45% of 210 m

You must write "m" after your answer to specify that it's in metres.

94.5m
94.5 m
EDDIE SAYS
10% of 210 = 21 5% of 210 = 10.5 21 + 21 + 21 + 21 + 10.5
• Question 4

Work out

55% of 400 sweets

(just write the number)

220
EDDIE SAYS
50% of 400 = 200 5% of 400 = 20 200 + 20
• Question 5

Work out

21% of 28 =
 ?
5.88
EDDIE SAYS
10% of 28 = 2.8 1% of 28 = 0.28 2.8 + 2.8 + 0.28
• Question 6

Work out

5% of £26 =
 ?
£1.30
£ 1.30
130p
130 p
EDDIE SAYS
10% of £26 = £2.60 5% of £26 = £1.30 This can also be written as 130p
• Question 7

Work out

104% of 121 =
 ?
125.84
EDDIE SAYS
100% of 121 = 121 1% of 121 = 1.21 121 + 1.21 + 1.21 + 1.21 + 1.21
• Question 8

Work out

100% of 97 =
 ?
97
EDDIE SAYS
100% of a number is just the number
• Question 9

Work out

40% of 17kg =
 ?

Don't forget to write "kg" after your answer, to specify that it's in kilograms.

6.8 kg
6.8kg
EDDIE SAYS
10% of 17kg = 1.7kg 1.7 + 1.7 + 1.7 + 1.7
• Question 10

Work out

15% of £108 =

£16.20
£ 16.20
EDDIE SAYS
10% of £108 = £10.80 5% of £108 = £5.40 10.80 + 5.40 Don't forget that as this is money, you must use two decimal places
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