Year 3 Missing Numbers in Number Sentences Worksheet — Level 2 — Practice Set 2 — 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 2 — Practice Set 2 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) − 27 = 50
Answer: 77
- 50 + 27 = 77
2.45 − (answer space) = 35
Answer: 10
- 45 − 35 = 10
3. (answer space) + 48 = 75
Answer: 27
- 75 − 48 = 27
4.27 − (answer space) = 15
Answer: 12
- 27 − 15 = 12
5. (answer space) − 79 = 2
Answer: 81
- 2 + 79 = 81
6.75 + (answer space) = 100
Answer: 25
- 100 − 75 = 25
7. (answer space) − 28 = 21
Answer: 49
- 21 + 28 = 49
8. (answer space) − 2 = 75
Answer: 77
- 75 + 2 = 77
9.73 + (answer space) = 76
Answer: 3
- 76 − 73 = 3
10.38 + (answer space) = 41
Answer: 3
- 41 − 38 = 3
11.46 + (answer space) = 49
Answer: 3
- 49 − 46 = 3
12. (answer space) − 53 = 2
Answer: 55
- 2 + 53 = 55
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.