Adding Mixed Numbers with the Same Denominator: Step-by-Step Example
22 October 2026
When your child is learning to add mixed numbers with the same denominator, it helps to break the problem into simple parts. By looking at the whole numbers and the fractions separately, children can see each step clearly.
Worked example
Add 2 3/8 + 1 2/8.
Step 1: Add the whole numbers. 2 + 1 = 3.
Step 2: Add the fractions. 3/8 + 2/8 = 5/8.
Step 3: Write the answer as a mixed number. 3 5/8.
The correct answer is 3 5/8.
| Step | Calculation | Answer |
|---|---|---|
| Add whole numbers | 2 + 1 | 3 |
| Add fractions | 3/8 + 2/8 | 5/8 |
| Write as mixed number | 3 and 5/8 | 3 5/8 |
After working through this example, your child will recognise how to add the whole numbers first, then the fractions, and finally write the answer as a mixed number. The next step is to practise adding mixed numbers with the same denominator using similar questions.
