1st Grade Missing Numbers in Number Sentences Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the 1st Grade addition worksheet.
Success TutoringWorksheetsAnswer sheet1st Grade · Mathematics · Addition1st Grade Missing Numbers in Number Sentences Worksheet — Level 1 — Answers
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1.17 + (answer space) = 19
Answer: 2
- 19 − 17 = 2
2. (answer space) + 7 = 13
Answer: 6
- 13 − 7 = 6
3.19 − (answer space) = 2
Answer: 17
- 19 − 2 = 17
4.15 − (answer space) = 11
Answer: 4
- 15 − 11 = 4
5.5 + (answer space) = 11
Answer: 6
- 11 − 5 = 6
6.17 − (answer space) = 12
Answer: 5
- 17 − 12 = 5
7. (answer space) − 14 = 3
Answer: 17
- 3 + 14 = 17
8. (answer space) + 17 = 18
Answer: 1
- 18 − 17 = 1
9. (answer space) − 15 = 2
Answer: 17
- 2 + 15 = 17
10. (answer space) + 10 = 17
Answer: 7
- 17 − 10 = 7
11. (answer space) − 7 = 11
Answer: 18
- 11 + 7 = 18
12. (answer space) + 5 = 10
Answer: 5
- 10 − 5 = 5
Marking tips
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