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Addition within 100 worksheets

These questions practise two-number addition within 100 and may require carrying across place values.

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Addition within 100 worksheets
Name: ____________________Date: ____________________
1.17 + 27 =
2.17 + 23 =
3.32 + 20 =
4.5 + 17 =
5.27 + 8 =
6.21 + 15 =
7.30 + 44 =
8.24 + 7 =
9.25 + 15 =
10.33 + 39 =
11.40 + 35 =
12.34 + 16 =
13.15 + 26 =
14.9 + 48 =
15.39 + 33 =
16.26 + 31 =
17.30 + 27 =
18.48 + 26 =
19.30 + 43 =
20.30 + 23 =
Answer key
1. 44
2. 40
3. 52
4. 22
5. 35
6. 36
7. 74
8. 31
9. 40
10. 72
11. 75
12. 50
13. 41
14. 57
15. 72
16. 57
17. 57
18. 74
19. 73
20. 53
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What this worksheet includes

These questions practise two-number addition within 100 and may require carrying across place values.

  • 20 questions by default
  • Each addend is from 5 to 50
  • The largest possible sum is 100
  • Questions may include carrying

Choosing a practice session

  • Place-value practice
  • Written or mental calculation
  • Addition review with an answer key

Content reviewExamples reviewed 7 October 2026. Found a problem? Send a correction