Year 3 Missing Numbers in Number Sentences Worksheet — Level 3 — Practice Set 3 — 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 3 — Practice Set 3 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1.560 + (answer space) = 566
Answer: 6
- 566 − 560 = 6
2. (answer space) − 186 = 381
Answer: 567
- 381 + 186 = 567
3. (answer space) − 509 = 234
Answer: 743
- 234 + 509 = 743
4.637 − (answer space) = 522
Answer: 115
- 637 − 522 = 115
5. (answer space) − 132 = 501
Answer: 633
- 501 + 132 = 633
6.165 + (answer space) = 302
Answer: 137
- 302 − 165 = 137
7. (answer space) − 20 = 469
Answer: 489
- 469 + 20 = 489
8. (answer space) − 539 = 244
Answer: 783
- 244 + 539 = 783
9. (answer space) − 87 = 278
Answer: 365
- 278 + 87 = 365
10.696 + (answer space) = 745
Answer: 49
- 745 − 696 = 49
11.370 + (answer space) = 956
Answer: 586
- 956 − 370 = 586
12. (answer space) + 793 = 937
Answer: 144
- 937 − 793 = 144
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.