# Subtract fractions with the same denominator

I can subtract fractions with the same denominator.

# Subtract fractions with the same denominator

I can subtract fractions with the same denominator.

## Lesson details

### Key learning points

- If 5 subtract 2 is equal to 3 then 5 one sevenths subtract 2 one sevenths is equal to 3 one sevenths.
- To subtract fractions with the same denominator you subtract the numerators using the language of unitising.
- If fractions have the same denominator they can be subtracted.

### Common misconception

Children will rush to subtract both the numerator and the denominator when performing a subtraction of fractions with either structure in the lesson.

Reinforce the concept of the unit being the fraction which is denoted by the denominator. Get children to perform subtractions using real life objects before moving them onto using fractions instead, perhaps using unit fractions to begin with.

### Keywords

Minuend - The minuend is the number being subtracted from.

Subtrahend - A subtrahend is a number subtracted from another. There can be more than one.

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

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

### 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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