Year 3 Missing Numbers in Number Sentences Worksheet — Level 2 — Practice Set 4 — 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 — Practice Set 4 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) + 69 = 79
Answer: 10
- 79 − 69 = 10
2.37 + (answer space) = 58
Answer: 21
- 58 − 37 = 21
3.38 + (answer space) = 51
Answer: 13
- 51 − 38 = 13
4.87 + (answer space) = 94
Answer: 7
- 94 − 87 = 7
5. (answer space) − 31 = 16
Answer: 47
- 16 + 31 = 47
6. (answer space) − 45 = 22
Answer: 67
- 22 + 45 = 67
7.89 − (answer space) = 67
Answer: 22
- 89 − 67 = 22
8. (answer space) − 31 = 20
Answer: 51
- 20 + 31 = 51
9.33 + (answer space) = 65
Answer: 32
- 65 − 33 = 32
10. (answer space) − 16 = 12
Answer: 28
- 12 + 16 = 28
11.40 − (answer space) = 20
Answer: 20
- 40 − 20 = 20
12. (answer space) + 64 = 91
Answer: 27
- 91 − 64 = 27
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.