Let's solve each of the
2-digit mixed addition and subtraction problems with regrouping from the "Pizza Delivery Problems" worksheet. We’ll go through each house one by one, showing the steps for solving the math problems.
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🔢 Problem 1:
95 - 47
- Start from the right: 5 - 7 → can't do it, so borrow 1 from the tens place.
- 15 - 7 = 8
- Now, 8 (after borrowing) - 4 = 4
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✔ Answer: 48
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🔢 Problem 2:
42 + 68
- Add ones: 2 + 8 = 10 → write 0, carry over 1
- Add tens: 4 + 6 = 10, plus carried 1 = 11
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✔ Answer: 110
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🔢 Problem 3:
60 - 37
- 0 - 7 → can’t do it, borrow 1 from 6 → now 10 - 7 = 3
- 5 (after borrowing) - 3 = 2
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✔ Answer: 23
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🔢 Problem 4:
83 + 19
- Ones: 3 + 9 = 12 → write 2, carry 1
- Tens: 8 + 1 = 9, plus carry = 10
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✔ Answer: 102
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🔢 Problem 5:
35 - 28
- 5 - 8 → can’t do it, borrow → 15 - 8 = 7
- 2 (after borrowing) - 2 = 0
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✔ Answer: 7
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🔢 Problem 6:
85 + 29
- Ones: 5 + 9 = 14 → write 4, carry 1
- Tens: 8 + 2 = 10, plus carry = 11
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✔ Answer: 114
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🔢 Problem 7:
56 - 37
- 6 - 7 → borrow → 16 - 7 = 9
- 4 (after borrowing) - 3 = 1
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✔ Answer: 19
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🔢 Problem 8:
70 + 89
- Ones: 0 + 9 = 9
- Tens: 7 + 8 = 15
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✔ Answer: 159
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🔢 Problem 9:
62 - 46
- 2 - 6 → borrow → 12 - 6 = 6
- 5 (after borrowing) - 4 = 1
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✔ Answer: 16
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🔢 Problem 10:
98 + 16
- Ones: 8 + 6 = 14 → write 4, carry 1
- Tens: 9 + 1 = 10, plus carry = 11
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✔ Answer: 114
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🔢 Problem 11:
41 - 38
- 1 - 8 → borrow → 11 - 8 = 3
- 3 (after borrowing) - 3 = 0
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✔ Answer: 3
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🔢 Problem 12:
58 - 29
- 8 - 9 → borrow → 18 - 9 = 9
- 4 (after borrowing) - 2 = 2
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✔ Answer: 29
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🔢 Problem 13:
68 + 77
- Ones: 8 + 7 = 15 → write 5, carry 1
- Tens: 6 + 7 = 13, plus carry = 14
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✔ Answer: 145
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🔢 Problem 14:
84 - 59
- 4 - 9 → borrow → 14 - 9 = 5
- 7 (after borrowing) - 5 = 2
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✔ Answer: 25
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✔ Final Answers:
| House | Problem | Answer |
|-------|-------------|--------|
| 1 | 95 - 47 | 48 |
| 2 | 42 + 68 | 110 |
| 3 | 60 - 37 | 23 |
| 4 | 83 + 19 | 102 |
| 5 | 35 - 28 | 7 |
| 6 | 85 + 29 | 114 |
| 7 | 56 - 37 | 19 |
| 8 | 70 + 89 | 159 |
| 9 | 62 - 46 | 16 |
| 10 | 98 + 16 | 114 |
| 11 | 41 - 38 | 3 |
| 12 | 58 - 29 | 29 |
| 13 | 68 + 77 | 145 |
| 14 | 84 - 59 | 25 |
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🍕 Conclusion:
The pizza delivery man can now deliver pizzas to all 14 houses by solving these problems! Each answer represents a "delivery" completed.
Let me know if you'd like this formatted as a printable answer key or need help explaining any step in detail!
Parent Tip: Review the logic above to help your child master the concept of double digit addition and subtraction with regrouping worksheet.
