How to explain subtract fractions with the same denominator in add & subtract fractions to your child. Example question
31 October 2026
When your child is learning to subtract fractions with the same denominator, it helps to break the process into clear, simple steps. This makes it easier for them to see what changes and what stays the same in each calculation.
Example question
Subtract 3/8 from 7/8.
Step 1: Check the denominators. Both are 8.
Step 2: Subtract the numerators. 7 - 3 = 4.
Step 3: Keep the denominator the same. 8.
Step 4: Write the answer. 4/8.
Step 5: Simplify the fraction if you can. 4/8 = 1/2.
Answer: 7/8 - 3/8 = 4/8 = 1/2.
After working through this example, your child will spot that only the top numbers (numerators) change, while the bottom number (denominator) stays the same. They're now ready to practise subtracting fractions with the same denominator on their own.
