Let's solve each of the
2-digit subtraction problems with regrouping step by step. Regrouping (also known as borrowing) is needed when the bottom digit in a column is larger than the top digit.
---
🔹 Problem 1:
60 - 47
```
60
- 47
----
```
- Ones place: 0 - 7 → can't do, so
regroup.
- Borrow 1 from tens (6 becomes 5), add 10 to ones: 10 - 7 =
3
- Tens place: 5 - 4 =
1
- Answer:
13
✔ 13
---
🔹 Problem 2:
82 - 38
```
82
- 38
----
```
- Ones: 2 - 8 → can't do, borrow.
- Borrow 1 from 8 (tens), so 8 becomes 7, and 2 becomes 12.
- 12 - 8 =
4
- Tens: 7 - 3 =
4
- Answer:
44
✔ 44
---
🔹 Problem 3:
72 - 46
```
72
- 46
----
```
- Ones: 2 - 6 → can't do, borrow.
- 7 becomes 6, 2 becomes 12 → 12 - 6 =
6
- Tens: 6 - 4 =
2
- Answer:
26
✔ 26
---
🔹 Problem 4:
76 - 29
```
76
- 29
----
```
- Ones: 6 - 9 → borrow.
- 7 becomes 6, 6 becomes 16 → 16 - 9 =
7
- Tens: 6 - 2 =
4
- Answer:
47
✔ 47
---
🔹 Problem 5:
55 - 16
```
55
- 16
----
```
- Ones: 5 - 6 → borrow.
- 5 becomes 4, 5 becomes 15 → 15 - 6 =
9
- Tens: 4 - 1 =
3
- Answer:
39
✔ 39
---
🔹 Problem 6:
80 - 57
```
80
- 57
----
```
- Ones: 0 - 7 → borrow.
- 8 becomes 7, 0 becomes 10 → 10 - 7 =
3
- Tens: 7 - 5 =
2
- Answer:
23
✔ 23
---
🔹 Problem 7:
66 - 39
```
66
- 39
----
```
- Ones: 6 - 9 → borrow.
- 6 becomes 5, 6 becomes 16 → 16 - 9 =
7
- Tens: 5 - 3 =
2
- Answer:
27
✔ 27
---
🔹 Problem 8:
70 - 27
```
70
- 27
----
```
- Ones: 0 - 7 → borrow.
- 7 becomes 6, 0 becomes 10 → 10 - 7 =
3
- Tens: 6 - 2 =
4
- Answer:
43
✔ 43
---
🔹 Problem 9:
63 - 46
```
63
- 46
----
```
- Ones: 3 - 6 → borrow.
- 6 becomes 5, 3 becomes 13 → 13 - 6 =
7
- Tens: 5 - 4 =
1
- Answer:
17
✔ 17
---
🔹 Problem 10:
42 - 29
```
42
- 29
----
```
- Ones: 2 - 9 → borrow.
- 4 becomes 3, 2 becomes 12 → 12 - 9 =
3
- Tens: 3 - 2 =
1
- Answer:
13
✔ 13
---
🔹 Problem 11:
58 - 29
```
58
- 29
----
```
- Ones: 8 - 9 → borrow.
- 5 becomes 4, 8 becomes 18 → 18 - 9 =
9
- Tens: 4 - 2 =
2
- Answer:
29
✔ 29
---
🔹 Problem 12:
76 - 48
```
76
- 48
----
```
- Ones: 6 - 8 → borrow.
- 7 becomes 6, 6 becomes 16 → 16 - 8 =
8
- Tens: 6 - 4 =
2
- Answer:
28
✔ 28
---
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| 60 - 47 |
13 |
| 82 - 38 |
44 |
| 72 - 46 |
26 |
| 76 - 29 |
47 |
| 55 - 16 |
39 |
| 80 - 57 |
23 |
| 66 - 39 |
27 |
| 70 - 27 |
43 |
| 63 - 46 |
17 |
| 42 - 29 |
13 |
| 58 - 29 |
29 |
| 76 - 48 |
28 |
---
📝 Summary:
All problems involve
regrouping, where you borrow 1 from the tens place to make the ones place large enough to subtract. This is a key skill in 2-digit subtraction.
Let me know if you'd like a printable version or visual steps!
Parent Tip: Review the logic above to help your child master the concept of two digit subtraction worksheet with regrouping.
