Adding and subtracting fractions with the same denominator using a pizza example for Year 3 Maths.

Let’s solve each fraction addition problem step by step.

Remember: When adding fractions with the same denominator (bottom number), you just add the numerators (top numbers) and keep the denominator the same.

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First row:

1. 1/4 + 2/4
Add tops: 1 + 2 = 3
Keep bottom: 4
→ 3/4

2. 5/6 + 1/6
Add tops: 5 + 1 = 6
Keep bottom: 6
→ 6/6 → which is equal to 1 whole, but we’ll leave it as 6/6 unless told to simplify.

3. 1/10 + 2/10
Add tops: 1 + 2 = 3
Keep bottom: 10
→ 3/10

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Second row:

4. 3/5 + 1/5
Add tops: 3 + 1 = 4
Keep bottom: 5
→ 4/5

5. 2/7 + 4/7
Add tops: 2 + 4 = 6
Keep bottom: 7
→ 6/7

6. 7/9 + 1/9
Add tops: 7 + 1 = 8
Keep bottom: 9
→ 8/9

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Third row:

7. 1/5 + 2/5
Add tops: 1 + 2 = 3
Keep bottom: 5
→ 3/5

8. 3/8 + 2/8
Add tops: 3 + 2 = 5
Keep bottom: 8
→ 5/8

9. 1/8 + 4/8
Add tops: 1 + 4 = 5
Keep bottom: 8
→ 5/8

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Fourth row:

10. 5/10 + 3/10
Add tops: 5 + 3 = 8
Keep bottom: 10
→ 8/10

11. 3/8 + 2/8
Add tops: 3 + 2 = 5
Keep bottom: 8
→ 5/8

12. 1/4 + 3/4
Add tops: 1 + 3 = 4
Keep bottom: 4
→ 4/4 → which equals 1 whole, but again, we’ll write it as 4/4 unless simplifying.

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✔ All answers checked — no mistakes!

Final Answer:
3/4, 6/6, 3/10, 4/5, 6/7, 8/9, 3/5, 5/8, 5/8, 8/10, 5/8, 4/4