Year 3 Number Bonds Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 3 · Mathematics · AdditionYear 3 Number Bonds Worksheet — Level 3 — Practice Set 3 — Answers
Write the missing number to make the whole. These are number bonds to 100.
1. (answer space) + 30 = 100
Answer: 70
- 100 − 30 = 70
2. (answer space) + 75 = 100
Answer: 25
- 100 − 75 = 25
3. (answer space) + 40 = 100
Answer: 60
- 100 − 40 = 60
4.35 + (answer space) = 100
Answer: 65
- 100 − 35 = 65
5. (answer space) + 25 = 100
Answer: 75
- 100 − 25 = 75
6.5 + (answer space) = 100
Answer: 95
- 100 − 5 = 95
7.70 + (answer space) = 100
Answer: 30
- 100 − 70 = 30
8.80 + (answer space) = 100
Answer: 20
- 100 − 80 = 20
9. (answer space) + 85 = 100
Answer: 15
- 100 − 85 = 15
10.60 + (answer space) = 100
Answer: 40
- 100 − 60 = 40
11. (answer space) + 35 = 100
Answer: 65
- 100 − 35 = 65
12. (answer space) + 20 = 100
Answer: 80
- 100 − 20 = 80
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.