Year 3 Missing Numbers in Number Sentences Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 3 · Mathematics · AdditionYear 3 Missing Numbers in Number Sentences Worksheet — Level 2 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) + 69 = 73
Answer: 4
- 73 − 69 = 4
2.93 − (answer space) = 85
Answer: 8
- 93 − 85 = 8
3. (answer space) − 48 = 30
Answer: 78
- 30 + 48 = 78
4.35 + (answer space) = 86
Answer: 51
- 86 − 35 = 51
5.63 − (answer space) = 25
Answer: 38
- 63 − 25 = 38
6.100 − (answer space) = 21
Answer: 79
- 100 − 21 = 79
7. (answer space) + 20 = 74
Answer: 54
- 74 − 20 = 54
8.57 − (answer space) = 14
Answer: 43
- 57 − 14 = 43
9. (answer space) − 23 = 11
Answer: 34
- 11 + 23 = 34
10. (answer space) + 1 = 95
Answer: 94
- 95 − 1 = 94
11. (answer space) − 18 = 34
Answer: 52
- 34 + 18 = 52
12. (answer space) − 12 = 42
Answer: 54
- 42 + 12 = 54
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.