Year 3 Missing Numbers in Number Sentences Worksheet — Level 3 — 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 3 — Practice Set 4 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) − 247 = 114
Answer: 361
- 114 + 247 = 361
2. (answer space) − 246 = 109
Answer: 355
- 109 + 246 = 355
3.328 + (answer space) = 616
Answer: 288
- 616 − 328 = 288
4.297 + (answer space) = 364
Answer: 67
- 364 − 297 = 67
5. (answer space) + 685 = 951
Answer: 266
- 951 − 685 = 266
6.865 + (answer space) = 896
Answer: 31
- 896 − 865 = 31
7. (answer space) − 553 = 251
Answer: 804
- 251 + 553 = 804
8. (answer space) + 596 = 759
Answer: 163
- 759 − 596 = 163
9. (answer space) − 632 = 85
Answer: 717
- 85 + 632 = 717
10.308 − (answer space) = 196
Answer: 112
- 308 − 196 = 112
11. (answer space) + 391 = 635
Answer: 244
- 635 − 391 = 244
12.79 + (answer space) = 651
Answer: 572
- 651 − 79 = 572
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.