3rd Grade Missing Numbers in Number Sentences Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 3rd Grade addition worksheet.
Success TutoringWorksheetsAnswer sheet3rd Grade · Mathematics · Addition3rd Grade Missing Numbers in Number Sentences Worksheet — Level 2 — Practice Set 4 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) − 16 = 71
Answer: 87
- 71 + 16 = 87
2. (answer space) + 36 = 81
Answer: 45
- 81 − 36 = 45
3. (answer space) − 28 = 2
Answer: 30
- 2 + 28 = 30
4.28 − (answer space) = 21
Answer: 7
- 28 − 21 = 7
5. (answer space) − 39 = 26
Answer: 65
- 26 + 39 = 65
6. (answer space) − 4 = 54
Answer: 58
- 54 + 4 = 58
7. (answer space) + 24 = 35
Answer: 11
- 35 − 24 = 11
8.37 − (answer space) = 2
Answer: 35
- 37 − 2 = 35
9.28 − (answer space) = 5
Answer: 23
- 28 − 5 = 23
10. (answer space) + 8 = 45
Answer: 37
- 45 − 8 = 37
11.39 − (answer space) = 32
Answer: 7
- 39 − 32 = 7
12.16 + (answer space) = 28
Answer: 12
- 28 − 16 = 12
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.