Year 4 Missing Numbers in Number Sentences Worksheet — Level 3 — Answers
Answer sheet with worked solutions for the Year 4 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · AdditionYear 4 Missing Numbers in Number Sentences Worksheet — Level 3 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) + 143 = 493
Answer: 350
- 493 − 143 = 350
2.506 + (answer space) = 675
Answer: 169
- 675 − 506 = 169
3.792 − (answer space) = 506
Answer: 286
- 792 − 506 = 286
4.766 + (answer space) = 934
Answer: 168
- 934 − 766 = 168
5.292 − (answer space) = 189
Answer: 103
- 292 − 189 = 103
6.90 + (answer space) = 830
Answer: 740
- 830 − 90 = 740
7. (answer space) + 116 = 301
Answer: 185
- 301 − 116 = 185
8.547 − (answer space) = 152
Answer: 395
- 547 − 152 = 395
9.484 − (answer space) = 369
Answer: 115
- 484 − 369 = 115
10. (answer space) + 210 = 486
Answer: 276
- 486 − 210 = 276
11. (answer space) − 133 = 661
Answer: 794
- 661 + 133 = 794
12. (answer space) − 389 = 519
Answer: 908
- 519 + 389 = 908
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.