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Solve Percentage Problems Using a Calculator

In this worksheet, students will find a percentage of a given number using a calculator.

'Solve Percentage Problems Using a Calculator' worksheet

Key stage:  KS 3

Year:  Year 7 Maths worksheets

Curriculum topic:   Number

Curriculum subtopic:   Define, Interpret and Compare Percentages

Difficulty level:  

Worksheet Overview

This activity is about finding percentages of numbers using a calculator. 


Percent means out of a hundred. 


We can use this fact to help us convert a percentage to a decimal.

If we are working out 45% of a number, we can do this by considering 45% as 45/100 which means 45 ÷ 100 = 0.45. 


So we can work out 45% of 20 by 0.45 x 20.

Try putting this into your calculator, you should get an answer of 9.  


Let us look at some more examples. 




Example 1

23% of 400 

23% means 23/100= 0.23

0.23 x 400 = 92


Example 2 

A shirt costs £12.

In a sale, you will save 23% of £12.

How much money do you save?

0.23 x 12 = 2.76. 

You save £2.76


Do you feel ready to try some on your own? 

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