Let’s solve each math problem one by one. These are 2-digit addition and subtraction problems, some with regrouping (also called borrowing or carrying). We’ll go house by house.
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House 1: 95 - 47
Start from the right:
- 5 - 7 → can’t do that, so borrow 1 from the 9. Now it’s 15 - 7 = 8.
- The 9 becomes 8. Then 8 - 4 = 4.
→ Answer:
48
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House 2: 42 + 68
Right column: 2 + 8 = 10 → write down 0, carry over 1.
Left column: 4 + 6 = 10, plus the carried 1 = 11.
→ Answer:
110
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House 3: 60 - 37
Right column: 0 - 7 → can’t do, borrow from 6. Now 10 - 7 = 3.
The 6 becomes 5. Then 5 - 3 = 2.
→ Answer:
23
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House 4: 83 + 19
Right column: 3 + 9 = 12 → write 2, carry 1.
Left column: 8 + 1 = 9, plus carried 1 = 10.
→ Answer:
102
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House 5: 35 - 28
Right column: 5 - 8 → can’t do, borrow from 3. Now 15 - 8 = 7.
The 3 becomes 2. Then 2 - 2 = 0.
→ Answer:
7
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House 6: 85 + 29
Right column: 5 + 9 = 14 → write 4, carry 1.
Left column: 8 + 2 = 10, plus carried 1 = 11.
→ Answer:
114
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House 7: 56 - 37
Right column: 6 - 7 → can’t do, borrow from 5. Now 16 - 7 = 9.
The 5 becomes 4. Then 4 - 3 = 1.
→ Answer:
19
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House 8: 70 + 89
Right column: 0 + 9 = 9.
Left column: 7 + 8 = 15.
→ Answer:
159
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House 9: 62 - 46
Right column: 2 - 6 → can’t do, borrow from 6. Now 12 - 6 = 6.
The 6 becomes 5. Then 5 - 4 = 1.
→ Answer:
16
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House 10: 98 + 16
Right column: 8 + 6 = 14 → write 4, carry 1.
Left column: 9 + 1 = 10, plus carried 1 = 11.
→ Answer:
114
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House 11: 41 - 38
Right column: 1 - 8 → can’t do, borrow from 4. Now 11 - 8 = 3.
The 4 becomes 3. Then 3 - 3 = 0.
→ Answer:
3
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House 12: 58 - 29
Right column: 8 - 9 → can’t do, borrow from 5. Now 18 - 9 = 9.
The 5 becomes 4. Then 4 - 2 = 2.
→ Answer:
29
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House 13: 68 + 77
Right column: 8 + 7 = 15 → write 5, carry 1.
Left column: 6 + 7 = 13, plus carried 1 = 14.
→ Answer:
145
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House 14: 84 - 59
Right column: 4 - 9 → can’t do, borrow from 8. Now 14 - 9 = 5.
The 8 becomes 7. Then 7 - 5 = 2.
→ Answer:
25
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Final Answer:
House 1: 48
House 2: 110
House 3: 23
House 4: 102
House 5: 7
House 6: 114
House 7: 19
House 8: 159
House 9: 16
House 10: 114
House 11: 3
House 12: 29
House 13: 145
House 14: 25
Parent Tip: Review the logic above to help your child master the concept of mixed addition and subtraction with regrouping worksheet.
