For your exam, you will need to feel confident when dealing with fractions. This section will help you to recognise equivalent fractions and practise simple calculations.
Fractions of a quantity
How do we find 3/5 of 20?
Method 1 is to find 1/5 of 20, then multiply by 3.
1/5 of 20 is 20 ÷ 5 = 4.
We need 3/5 of 20, so we multiply 4 by 3.
3/5 of 20 = 4 × 3 = 12.
Method 2 is to multiply 3/5 by 20 (more on multiplying fractions here and here).
3/5 × 20 = 3/5 × 20/1 = 60/5 = 12
- Question
Use either method to find 3/7 of 35.
- Answer
The answer is 15.
1/7 of 35 is 5.
Links
On bbc.co.uk
On the web
bbc.co.uk navigation
BBC links
BBC © 2012 The BBC is not responsible for the content of external sites. Read more.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.