2nd Grade Missing Numbers in Number Sentences Worksheet — Level 1 — Practice Set 2 — 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 2 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) + 2 = 8
Answer: 6
- 8 − 2 = 6
2. (answer space) + 2 = 5
Answer: 3
- 5 − 2 = 3
3.20 − (answer space) = 7
Answer: 13
- 20 − 7 = 13
4.13 − (answer space) = 1
Answer: 12
- 13 − 1 = 12
5.14 − (answer space) = 4
Answer: 10
- 14 − 4 = 10
6.4 + (answer space) = 20
Answer: 16
- 20 − 4 = 16
7.17 − (answer space) = 12
Answer: 5
- 17 − 12 = 5
8.7 − (answer space) = 4
Answer: 3
- 7 − 4 = 3
9.10 − (answer space) = 8
Answer: 2
- 10 − 8 = 2
10.19 − (answer space) = 1
Answer: 18
- 19 − 1 = 18
11. (answer space) − 6 = 7
Answer: 13
- 7 + 6 = 13
12. (answer space) + 5 = 15
Answer: 10
- 15 − 5 = 10
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.