Subtracting Proper Fractions with the Same Denominator: Step-by-Step Example
22 October 2026
When children start learning about fractions, subtracting proper fractions with the same denominator is an important skill. This helps them build confidence with fractions before moving on to more complex problems.
Worked example
Subtract 4/9 - 3/9
Step 1: Check the denominators. Both are 9, so you can subtract.
Step 2: Subtract the numerators. 4 - 3 = 1
Step 3: Keep the denominator the same. It stays as 9.
The answer is 1/9.
Key insight: After working through this example, your child will recognise how to subtract fractions when the bottom numbers match. They can now try similar questions to practise this method.
