2nd Grade Missing Numbers in Number Sentences Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 2nd Grade addition worksheet.
Success TutoringWorksheetsAnswer sheet2nd Grade · Mathematics · Addition2nd Grade Missing Numbers in Number Sentences Worksheet — Level 1 — Practice Set 3 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1.8 + (answer space) = 10
Answer: 2
- 10 − 8 = 2
2. (answer space) − 11 = 1
Answer: 12
- 1 + 11 = 12
3. (answer space) + 7 = 16
Answer: 9
- 16 − 7 = 9
4. (answer space) + 3 = 8
Answer: 5
- 8 − 3 = 5
5.12 − (answer space) = 6
Answer: 6
- 12 − 6 = 6
6.6 − (answer space) = 2
Answer: 4
- 6 − 2 = 4
7. (answer space) + 8 = 12
Answer: 4
- 12 − 8 = 4
8. (answer space) + 15 = 17
Answer: 2
- 17 − 15 = 2
9.5 + (answer space) = 6
Answer: 1
- 6 − 5 = 1
10. (answer space) + 6 = 9
Answer: 3
- 9 − 6 = 3
11.5 + (answer space) = 11
Answer: 6
- 11 − 5 = 6
12. (answer space) − 11 = 3
Answer: 14
- 3 + 11 = 14
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.