# Add on fractions with the same denominator

I can add on fractions with the same denominator.

# Add on fractions with the same denominator

I can add on fractions with the same denominator.

## Lesson details

### Key learning points

- If fractions have the same denominator they can be added on.
- If 2 plus 3 is equal to 5 then 2 one sevenths plus 3 one sevenths is equal to 5 one sevenths.
- To add fractions with the same denominator you use the language of unitising.

### Common misconception

When adding fractions with the same denominator many children may try and add both the numerator and denominator.

This is a misunderstanding of the unitisation. Practise counting in different set of objects such as cubes, counters, children. Move children on to counting in fractions and explain that this is simply a different unit, shown by the denominator.

### Keywords

Units - The unit is one of something that defines the ‘one’ you are counting in.

Denominator - A denominator is the bottom number in a fraction. It shows how many parts a whole has been divided into.

Numerator - A numerator is the top number in a fraction. It shows how many parts we have.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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