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.
1.6 − (answer space) = 2
Answer: 4
- 6 − 2 = 4
2. (answer space) − 16 = 1
Answer: 17
- 1 + 16 = 17
3.4 + (answer space) = 6
Answer: 2
- 6 − 4 = 2
4. (answer space) − 3 = 7
Answer: 10
- 7 + 3 = 10
5.20 − (answer space) = 18
Answer: 2
- 20 − 18 = 2
6. (answer space) + 9 = 14
Answer: 5
- 14 − 9 = 5
7. (answer space) + 1 = 8
Answer: 7
- 8 − 1 = 7
8. (answer space) − 4 = 9
Answer: 13
- 9 + 4 = 13
9.11 − (answer space) = 3
Answer: 8
- 11 − 3 = 8
10.9 + (answer space) = 16
Answer: 7
- 16 − 9 = 7
11. (answer space) − 4 = 4
Answer: 8
- 4 + 4 = 8
12. (answer space) − 6 = 13
Answer: 19
- 13 + 6 = 19
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.