Add and subtract fractions

Home learning focus

Learn how to add and subtract different types of fractions.

This includes:

  • one video
  • three interactive activities
  • one worksheet


How to add and subtract fractions

In this video from KS2 Maths an astronaut finds out whether they have enough fuel by adding and subtracting fractions.

Common denominators

It's easy to add and subtract fractions when the numbers on the bottom are the same.

These are called the denominators.

Equivalent fractions

However, sometimes the denominators are different.

You use equivalent fractions to make them the same.

A common multiple of 2 and 3 is 6.

So, for each fraction we need an equivalent fraction with a denominator of 6.

Now you can add these together.


Activity 1

Adding fractions interactive

Can you add together the fractions in this interactive activity from KS2 Maths?

Activity 2

Subtracting fractions interactive

Now try subtracting the fractions in this KS2 Maths interactive activity.

Activity 3

Equivalent fractions interactive

Can you use equivalent fractions to complete this KS2 Maths interactive activity?

Activity 4

Adding and subtracting fractions worksheet

Can you complete this adding and subtracting fractions worksheet from Collins?

Adding and subtracting fractions worksheet

Click here for the answers.

There's more to learn

Have a look at these other resources around the BBC and the web.

BBC Bitesize Daily
KS2 Maths
Primary games
7 - 11 Maths
Join the Super Movement!
KS2 English