Calculating Percentages
Maths: Year 5 & 6 National Curriculum, topic 6.2.1
Calculating Percentages
To find the percentage of a number, you need to know how to divide by 100 and how to multiply decimals.
'Per cent' = 'of 100'
- You need to remember that ‘per cent’ literally means ‘of 100’.
- I want to find 15% of 60.
- The first thing you need to do is divide 60 by 100.
- Dividing by 100 makes you find 1% of the amount.
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Dividing by 100 recap
- When you divide by 100, all digits move two columns to the right.
- Don’t forget your decimal place!
- 60 ÷ 100 = 0.6
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1% of 60
- 0.6 is 1% of 60.
- 15% is equal to 15 × 1%.
- To find 15%, you need to work out 0.6 × 15.
Answer
- 15% of 60 = 9