Subtract 1-Digit Numbers from 2-Digit Numbers with Regrouping ... - Free Printable

Let's solve each subtraction problem on the worksheet step by step. The task is to subtract 1-digit numbers from 2-digit numbers with regrouping (also known as borrowing). We'll go through each problem carefully.

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🔹 Problem 1:

41 - 7

- Ones place: 1 - 7 → Can't do it, so we need to regroup.
- Borrow 1 from the tens place (4 becomes 3), and add 10 to the ones place (1 becomes 11).
- Now: 11 - 7 = 4
- Tens place: 3 - 0 = 3
- Answer: 34

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🔹 Problem 2:

22 - 5

- Ones place: 2 - 5 → Can't do it, so regroup.
- Borrow 1 from tens (2 becomes 1), ones become 12.
- 12 - 5 = 7
- Tens: 1 - 0 = 1
- Answer: 17

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🔹 Problem 3:

71 - 3

- Ones place: 1 - 3 → Can't do it.
- Borrow 1 from tens (7 becomes 6), ones become 11.
- 11 - 3 = 8
- Tens: 6 - 0 = 6
- Answer: 68

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🔹 Problem 4:

90 - 7

- Ones place: 0 - 7 → Can't do it.
- Borrow 1 from tens (9 becomes 8), ones become 10.
- 10 - 7 = 3
- Tens: 8 - 0 = 8
- Answer: 83

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🔹 Problem 5:

81 - 2

- Ones place: 1 - 2 → Can't do it.
- Borrow 1 from tens (8 becomes 7), ones become 11.
- 11 - 2 = 9
- Tens: 7 - 0 = 7
- Answer: 79

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🔹 Problem 6:

66 - 9

- Ones place: 6 - 9 → Can't do it.
- Borrow 1 from tens (6 becomes 5), ones become 16.
- 16 - 9 = 7
- Tens: 5 - 0 = 5
- Answer: 57

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🔹 Problem 7:

74 - 6

- Ones place: 4 - 6 → Can't do it.
- Borrow 1 from tens (7 becomes 6), ones become 14.
- 14 - 6 = 8
- Tens: 6 - 0 = 6
- Answer: 68

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🔹 Problem 8:

44 - 8

- Ones place: 4 - 8 → Can't do it.
- Borrow 1 from tens (4 becomes 3), ones become 14.
- 14 - 8 = 6
- Tens: 3 - 0 = 3
- Answer: 36

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🔹 Problem 9:

80 - 1

- Ones place: 0 - 1 → Can't do it.
- Borrow 1 from tens (8 becomes 7), ones become 10.
- 10 - 1 = 9
- Tens: 7 - 0 = 7
- Answer: 79

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🔹 Problem 10:

61 - 9

- Ones place: 1 - 9 → Can't do it.
- Borrow 1 from tens (6 becomes 5), ones become 11.
- 11 - 9 = 2
- Tens: 5 - 0 = 5
- Answer: 52

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🔹 Problem 11:

13 - 8

- Ones place: 3 - 8 → Can't do it.
- Borrow 1 from tens (1 becomes 0), ones become 13.
- 13 - 8 = 5
- Tens: 0 - 0 = 0
- Answer: 5

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🔹 Problem 12:

31 - 9

- Ones place: 1 - 9 → Can't do it.
- Borrow 1 from tens (3 becomes 2), ones become 11.
- 11 - 9 = 2
- Tens: 2 - 0 = 2
- Answer: 22

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🔹 Problem 13:

22 - 3

- Ones place: 2 - 3 → Can't do it.
- Borrow 1 from tens (2 becomes 1), ones become 12.
- 12 - 3 = 9
- Tens: 1 - 0 = 1
- Answer: 19

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🔹 Problem 14:

62 - 7

- Ones place: 2 - 7 → Can't do it.
- Borrow 1 from tens (6 becomes 5), ones become 12.
- 12 - 7 = 5
- Tens: 5 - 0 = 5
- Answer: 55

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🔹 Problem 15:

54 - 5

- Ones place: 4 - 5 → Can't do it.
- Borrow 1 from tens (5 becomes 4), ones become 14.
- 14 - 5 = 9
- Tens: 4 - 0 = 4
- Answer: 49

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🔹 Problem 16:

70 - 4

- Ones place: 0 - 4 → Can't do it.
- Borrow 1 from tens (7 becomes 6), ones become 10.
- 10 - 4 = 6
- Tens: 6 - 0 = 6
- Answer: 66

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✔ Final Answers:

| Problem | Answer |
|--------|--------|
| 41 - 7 | 34 |
| 22 - 5 | 17 |
| 71 - 3 | 68 |
| 90 - 7 | 83 |
| 81 - 2 | 79 |
| 66 - 9 | 57 |
| 74 - 6 | 68 |
| 44 - 8 | 36 |
| 80 - 1 | 79 |
| 61 - 9 | 52 |
| 13 - 8 | 5 |
| 31 - 9 | 22 |
| 22 - 3 | 19 |
| 62 - 7 | 55 |
| 54 - 5 | 49 |
| 70 - 4 | 66 |

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📝 Explanation Summary:

When subtracting a 1-digit number from a 2-digit number and the ones digit is too small, you must borrow 1 from the tens place. This turns the ones digit into a larger number (like 10 or more) so you can subtract. Then, reduce the tens digit by 1 before completing the subtraction.

This method ensures accurate subtraction even when regrouping is needed.

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