Let’s solve each addition problem step by step using regrouping (also called carrying). We’ll add the ones column first. If the sum is 10 or more, we carry the “1” to the tens column. Then we add the tens column including any carried number.
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Problem 1: 52 + 9
- Ones: 2 + 9 = 11 → write down 1, carry 1 to tens
- Tens: 5 + 1 (carried) = 6
→ Answer:
61
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Problem 2: 76 + 7
- Ones: 6 + 7 = 13 → write down 3, carry 1
- Tens: 7 + 1 = 8
→ Answer:
83
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Problem 3: 23 + 9
- Ones: 3 + 9 = 12 → write down 2, carry 1
- Tens: 2 + 1 = 3
→ Answer:
32
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Problem 4: 39 + 4
- Ones: 9 + 4 = 13 → write down 3, carry 1
- Tens: 3 + 1 = 4
→ Answer:
43
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Problem 5: 67 + 6
- Ones: 7 + 6 = 13 → write down 3, carry 1
- Tens: 6 + 1 = 7
→ Answer:
73
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Problem 6: 84 + 7
- Ones: 4 + 7 = 11 → write down 1, carry 1
- Tens: 8 + 1 = 9
→ Answer:
91
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Problem 7: 45 + 9
- Ones: 5 + 9 = 14 → write down 4, carry 1
- Tens: 4 + 1 = 5
→ Answer:
54
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Problem 8: 68 + 7
- Ones: 8 + 7 = 15 → write down 5, carry 1
- Tens: 6 + 1 = 7
→ Answer:
75
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Problem 9: 75 + 6
- Ones: 5 + 6 = 11 → write down 1, carry 1
- Tens: 7 + 1 = 8
→ Answer:
81
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Final Answer:
61, 83, 32, 43, 73, 91, 54, 75, 81
Parent Tip: Review the logic above to help your child master the concept of fun addition with regrouping worksheet.
