3rd Grade Missing Numbers in Number Sentences Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1.14 + (answer space) = 26
Answer: 12
- 26 − 14 = 12
2.40 + (answer space) = 68
Answer: 28
- 68 − 40 = 28
3. (answer space) + 1 = 75
Answer: 74
- 75 − 1 = 74
4.72 − (answer space) = 10
Answer: 62
- 72 − 10 = 62
5.21 + (answer space) = 53
Answer: 32
- 53 − 21 = 32
6. (answer space) + 64 = 73
Answer: 9
- 73 − 64 = 9
7. (answer space) + 60 = 84
Answer: 24
- 84 − 60 = 24
8. (answer space) + 38 = 46
Answer: 8
- 46 − 38 = 8
9.50 + (answer space) = 97
Answer: 47
- 97 − 50 = 47
10. (answer space) + 33 = 60
Answer: 27
- 60 − 33 = 27
11.37 + (answer space) = 39
Answer: 2
- 39 − 37 = 2
12.99 − (answer space) = 68
Answer: 31
- 99 − 68 = 31
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.