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  1. Maths
  2. Year 7
  3. Fractions, Decimals and Percentages
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Find Percentages of Numbers, Quantities and Measurements

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

'Find Percentages of Numbers, Quantities and Measurements' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Define, Interpret and Compare Percentages

Difficulty level:  

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Worksheet Overview

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 =
 

(give your answer in pounds)

  • ANSWERS
  • Question 1

Work out:

 

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

Work out:

 

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

Work out

45% of 210 m

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

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

Work out

55% of 400 sweets

(just write the number)

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

Work out

 

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

Work out

5% of £26 =
 ?
CORRECT ANSWER
£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
  • ANSWERS
  • Question 7

Work out

 

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

Work out

 

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

Work out

 

40% of 17kg =
 ?

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

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

Work out

 

15% of £108 =
 

(give your answer in pounds)

CORRECT ANSWER
£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
---- OR ----
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