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.
1.73 + (answer space) = 84
Answer: 11
- 84 − 73 = 11
2. (answer space) − 33 = 26
Answer: 59
- 26 + 33 = 59
3.15 + (answer space) = 36
Answer: 21
- 36 − 15 = 21
4. (answer space) − 51 = 41
Answer: 92
- 41 + 51 = 92
5.35 + (answer space) = 72
Answer: 37
- 72 − 35 = 37
6. (answer space) + 5 = 44
Answer: 39
- 44 − 5 = 39
7.40 + (answer space) = 54
Answer: 14
- 54 − 40 = 14
8. (answer space) − 40 = 45
Answer: 85
- 45 + 40 = 85
9.41 + (answer space) = 80
Answer: 39
- 80 − 41 = 39
10. (answer space) + 28 = 74
Answer: 46
- 74 − 28 = 46
11.89 − (answer space) = 57
Answer: 32
- 89 − 57 = 32
12.49 − (answer space) = 23
Answer: 26
- 49 − 23 = 26
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.