Let's solve each of the addition problems with regrouping (also known as carrying) step by step.
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Problem 1: 58 + 38
- Add ones: 8 + 8 = 16 → write down 6, carry over 1
- Add tens: 5 + 3 + 1 (carry) = 9
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Answer: 96
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Problem 2: 47 + 39
- Add ones: 7 + 9 = 16 → write down 6, carry over 1
- Add tens: 4 + 3 + 1 = 8
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Answer: 86
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Problem 3: 73 + 18
- Add ones: 3 + 8 = 11 → write down 1, carry over 1
- Add tens: 7 + 1 + 1 = 9
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Answer: 91
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Problem 4: 56 + 34
- Add ones: 6 + 4 = 10 → write down 0, carry over 1
- Add tens: 5 + 3 + 1 = 9
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Answer: 90
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Problem 5: 58 + 34
- Add ones: 8 + 4 = 12 → write down 2, carry over 1
- Add tens: 5 + 3 + 1 = 9
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Answer: 92
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Problem 6: 28 + 9
- Add ones: 8 + 9 = 17 → write down 7, carry over 1
- Add tens: 2 + 0 + 1 = 3
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Answer: 37
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Problem 7: 78 + 16
- Add ones: 8 + 6 = 14 → write down 4, carry over 1
- Add tens: 7 + 1 + 1 = 9
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Answer: 94
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Problem 8: 43 + 37
- Add ones: 3 + 7 = 10 → write down 0, carry over 1
- Add tens: 4 + 3 + 1 = 8
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Answer: 80
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Problem 9: 65 + 29
- Add ones: 5 + 9 = 14 → write down 4, carry over 1
- Add tens: 6 + 2 + 1 = 9
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Answer: 94
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Problem 10: 36 + 58
- Add ones: 6 + 8 = 14 → write down 4, carry over 1
- Add tens: 3 + 5 + 1 = 9
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Answer: 94
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Problem 11: 55 + 29
- Add ones: 5 + 9 = 14 → write down 4, carry over 1
- Add tens: 5 + 2 + 1 = 8
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Answer: 84
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Problem 12: 69 + 15
- Add ones: 9 + 5 = 14 → write down 4, carry over 1
- Add tens: 6 + 1 + 1 = 8
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Answer: 84
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Problem 13: 44 + 49
- Add ones: 4 + 9 = 13 → write down 3, carry over 1
- Add tens: 4 + 4 + 1 = 9
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Answer: 93
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Problem 14: 55 + 39
- Add ones: 5 + 9 = 14 → write down 4, carry over 1
- Add tens: 5 + 3 + 1 = 9
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Answer: 94
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Problem 15: 69 + 24
- Add ones: 9 + 4 = 13 → write down 3, carry over 1
- Add tens: 6 + 2 + 1 = 9
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Answer: 93
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Problem 16: 87 + 9
- Add ones: 7 + 9 = 16 → write down 6, carry over 1
- Add tens: 8 + 0 + 1 = 9
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Answer: 96
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✔ Final Answers:
1. 96
2. 86
3. 91
4. 90
5. 92
6. 37
7. 94
8. 80
9. 94
10. 94
11. 84
12. 84
13. 93
14. 94
15. 93
16. 96
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📝 Explanation:
Regrouping (Carrying) occurs when the sum of digits in a column is 10 or more. You write down the ones digit and carry the tens digit to the next column.
For example, in
58 + 38:
- 8 + 8 = 16 → write 6, carry 1
- 5 + 3 + 1 = 9 → so total is
96
This method helps students understand place value and how numbers are composed.
Let me know if you'd like this formatted for printing or need a version with steps shown!
Parent Tip: Review the logic above to help your child master the concept of two digit addition worksheet with regrouping.
