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Using a Calculator to Find Percentages of Quantities

In this worksheet, students find percentages of quantities using a calculator.

'Using a Calculator to Find Percentages of Quantities' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Calculators/Technology for Accuracy

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

This worksheet is about finding percentages of quantities using a calculator.

 

Example

Find 62
1
2
%   of £732.

 

Answer

Remember that you divide by 100 to find 1% of a number.

On your calculator work out 732 ÷ 100 x 62.5


= 457.5 = £ 457.50

Work out:

54% of 400

Work out:

34% of 420

Work out:

55% of £450

(just write the number)

Work out:

155% of £450

(just write the number)

Work out:

32½% of £300

(just write the number)

Work out:

62½% of £320

(just write the number)

Work out:

62½% of 320 kg

(just write the number)

Work out:

62.3% of 840 km

(just write the number)

Work out:

12.5% of 840 g

(just write the number)

Work out:

125.5% of 650 m

(just write the number)

  • Question 1

Work out:

54% of 400

CORRECT ANSWER
216
  • Question 2

Work out:

34% of 420

CORRECT ANSWER
142.8
  • Question 3

Work out:

55% of £450

(just write the number)

CORRECT ANSWER
247.50
247.5
  • Question 4

Work out:

155% of £450

(just write the number)

CORRECT ANSWER
697.50
697.5
  • Question 5

Work out:

32½% of £300

(just write the number)

CORRECT ANSWER
97.50
97.5
  • Question 6

Work out:

62½% of £320

(just write the number)

CORRECT ANSWER
200
  • Question 7

Work out:

62½% of 320 kg

(just write the number)

CORRECT ANSWER
200
  • Question 8

Work out:

62.3% of 840 km

(just write the number)

CORRECT ANSWER
523.32
  • Question 9

Work out:

12.5% of 840 g

(just write the number)

CORRECT ANSWER
105
  • Question 10

Work out:

125.5% of 650 m

(just write the number)

CORRECT ANSWER
815.75
---- OR ----

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