How to explain add and subtract fractions with the same denominator: word problems in fraction problems to your child. Example question
1 November 2026
Word problems with fractions can seem tricky at first, but they become much easier once your child understands what the question is asking. When the denominators are the same, your child just needs to focus on the numerators.
Sam drank 5/12 of a bottle of juice. His friend drank 3/12 of the same bottle. How much more did Sam drink than his friend?
Step 1: Check the denominators
Both fractions have the same denominator, 12. The bottle is split into 12 equal parts.
Step 2: Subtract the numerators 5 - 3 = 2
Step 3: Keep the denominator the same
The denominator stays 12.
Step 4: Write the answer
Sam drank 2/12 more than his friend.
Key insight: When subtracting fractions with the same denominator, subtract the numerators and keep the denominator the same.
After working through this example, your child will spot when to add or subtract the numerators in similar questions. They will be ready to practise more problems with fractions that have the same denominator.
