Year 3 Number Bonds Worksheet — Level 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 — Answers
Write the missing number to make the whole. These are number bonds to 100.
1. (answer space) + 70 = 100
Answer: 30
- 100 − 70 = 30
2. (answer space) + 20 = 100
Answer: 80
- 100 − 20 = 80
3.25 + (answer space) = 100
Answer: 75
- 100 − 25 = 75
4.40 + (answer space) = 100
Answer: 60
- 100 − 40 = 60
5.55 + (answer space) = 100
Answer: 45
- 100 − 55 = 45
6. (answer space) + 85 = 100
Answer: 15
- 100 − 85 = 15
7.15 + (answer space) = 100
Answer: 85
- 100 − 15 = 85
8.45 + (answer space) = 100
Answer: 55
- 100 − 45 = 55
9. (answer space) + 5 = 100
Answer: 95
- 100 − 5 = 95
10.65 + (answer space) = 100
Answer: 35
- 100 − 65 = 35
11.5 + (answer space) = 100
Answer: 95
- 100 − 5 = 95
12. (answer space) + 75 = 100
Answer: 25
- 100 − 75 = 25
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.