Year 3 Missing Numbers in Number Sentences Worksheet — Level 1 — 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 1 — Practice Set 4 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) − 9 = 2
Answer: 11
- 2 + 9 = 11
2. (answer space) + 1 = 6
Answer: 5
- 6 − 1 = 5
3.3 + (answer space) = 7
Answer: 4
- 7 − 3 = 4
4.2 + (answer space) = 5
Answer: 3
- 5 − 2 = 3
5. (answer space) − 1 = 11
Answer: 12
- 11 + 1 = 12
6.14 − (answer space) = 1
Answer: 13
- 14 − 1 = 13
7. (answer space) + 4 = 8
Answer: 4
- 8 − 4 = 4
8. (answer space) + 1 = 12
Answer: 11
- 12 − 1 = 11
9.5 − (answer space) = 4
Answer: 1
- 5 − 4 = 1
10. (answer space) + 3 = 5
Answer: 2
- 5 − 3 = 2
11. (answer space) + 2 = 7
Answer: 5
- 7 − 2 = 5
12.15 − (answer space) = 2
Answer: 13
- 15 − 2 = 13
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.