Problem: Subtraction with Borrowing
The task involves solving a series of subtraction problems that require borrowing. Let's solve each problem step by step.
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####
Problem 1:
$$
97 - 47
$$
- Subtract the ones place: \( 7 - 7 = 0 \)
- Subtract the tens place: \( 9 - 4 = 5 \)
- Result: \( 50 \)
Answer: \( 50 \)
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####
Problem 2:
$$
82 - 58
$$
- Subtract the ones place: \( 2 < 8 \), so borrow 1 from the tens place.
- \( 12 - 8 = 4 \)
- Subtract the tens place: After borrowing, \( 7 - 5 = 2 \)
- Result: \( 24 \)
Answer: \( 24 \)
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Problem 3:
$$
91 - 77
$$
- Subtract the ones place: \( 1 < 7 \), so borrow 1 from the tens place.
- \( 11 - 7 = 4 \)
- Subtract the tens place: After borrowing, \( 8 - 7 = 1 \)
- Result: \( 14 \)
Answer: \( 14 \)
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####
Problem 4:
$$
70 - 54
$$
- Subtract the ones place: \( 0 < 4 \), so borrow 1 from the tens place.
- \( 10 - 4 = 6 \)
- Subtract the tens place: After borrowing, \( 6 - 5 = 1 \)
- Result: \( 16 \)
Answer: \( 16 \)
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####
Problem 5:
$$
63 - 57
$$
- Subtract the ones place: \( 3 < 7 \), so borrow 1 from the tens place.
- \( 13 - 7 = 6 \)
- Subtract the tens place: After borrowing, \( 5 - 5 = 0 \)
- Result: \( 6 \)
Answer: \( 6 \)
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####
Problem 6:
$$
72 - 36
$$
- Subtract the ones place: \( 2 < 6 \), so borrow 1 from the tens place.
- \( 12 - 6 = 6 \)
- Subtract the tens place: After borrowing, \( 6 - 3 = 3 \)
- Result: \( 36 \)
Answer: \( 36 \)
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Problem 7:
$$
54 - 45
$$
- Subtract the ones place: \( 4 < 5 \), so borrow 1 from the tens place.
- \( 14 - 5 = 9 \)
- Subtract the tens place: After borrowing, \( 4 - 4 = 0 \)
- Result: \( 9 \)
Answer: \( 9 \)
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####
Problem 8:
$$
87 - 68
$$
- Subtract the ones place: \( 7 < 8 \), so borrow 1 from the tens place.
- \( 17 - 8 = 9 \)
- Subtract the tens place: After borrowing, \( 7 - 6 = 1 \)
- Result: \( 19 \)
Answer: \( 19 \)
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####
Problem 9:
$$
71 - 16
$$
- Subtract the ones place: \( 1 < 6 \), so borrow 1 from the tens place.
- \( 11 - 6 = 5 \)
- Subtract the tens place: After borrowing, \( 6 - 1 = 5 \)
- Result: \( 55 \)
Answer: \( 55 \)
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Final Answers:
1. \( 50 \)
2. \( 24 \)
3. \( 14 \)
4. \( 16 \)
5. \( 6 \)
6. \( 36 \)
7. \( 9 \)
8. \( 19 \)
9. \( 55 \)
Boxed Answer:
\[
\boxed{50, 24, 14, 16, 6, 36, 9, 19, 55}
\]
Parent Tip: Review the logic above to help your child master the concept of subtraction worksheets with borrowing.
