Year 4 Missing Numbers in Number Sentences Worksheet — Level 1 — 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 1 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) − 11 = 8
Answer: 19
- 8 + 11 = 19
2.8 − (answer space) = 3
Answer: 5
- 8 − 3 = 5
3. (answer space) + 6 = 11
Answer: 5
- 11 − 6 = 5
4.6 − (answer space) = 3
Answer: 3
- 6 − 3 = 3
5.8 + (answer space) = 12
Answer: 4
- 12 − 8 = 4
6.9 + (answer space) = 10
Answer: 1
- 10 − 9 = 1
7.9 + (answer space) = 16
Answer: 7
- 16 − 9 = 7
8. (answer space) − 15 = 1
Answer: 16
- 1 + 15 = 16
9. (answer space) + 3 = 5
Answer: 2
- 5 − 3 = 2
10. (answer space) − 3 = 5
Answer: 8
- 5 + 3 = 8
11.10 − (answer space) = 7
Answer: 3
- 10 − 7 = 3
12. (answer space) − 8 = 12
Answer: 20
- 12 + 8 = 20
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.
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