Sure! Let’s solve each problem step by step, explaining
addition with regrouping and
subtraction with regrouping.
---
##
✔ PART 1: Addition With Regrouping
We add numbers column by column (ones, then tens), and if the sum in any column is 10 or more, we “regroup” (carry over) to the next column.
---
1. 28 + 18
```
28
+ 18
-----
```
- Ones: 8 + 8 = 16 → write
6, carry
1 to tens.
- Tens: 2 + 1 + 1 (carry) = 4
✔ Answer: 46
---
2. 43 + 17
```
43
+ 17
-----
```
- Ones: 3 + 7 = 10 → write
0, carry
1
- Tens: 4 + 1 + 1 = 6
✔ Answer: 60
---
3. 25 + 15
```
25
+ 15
-----
```
- Ones: 5 + 5 = 10 → write
0, carry
1
- Tens: 2 + 1 + 1 = 4
✔ Answer: 40
---
4. 59 + 24
```
59
+ 24
-----
```
- Ones: 9 + 4 = 13 → write
3, carry
1
- Tens: 5 + 2 + 1 = 8
✔ Answer: 83
---
5. 26 + 25
```
26
+ 25
-----
```
- Ones: 6 + 5 = 11 → write
1, carry
1
- Tens: 2 + 2 + 1 = 5
✔ Answer: 51
---
6. 56 + 15
```
56
+ 15
-----
```
- Ones: 6 + 5 = 11 → write
1, carry
1
- Tens: 5 + 1 + 1 = 7
✔ Answer: 71
---
7. 37 + 26
```
37
+ 26
-----
```
- Ones: 7 + 6 = 13 → write
3, carry
1
- Tens: 3 + 2 + 1 = 6
✔ Answer: 63
---
8. 42 + 11
```
42
+ 11
-----
```
- Ones: 2 + 1 = 3
- Tens: 4 + 1 = 5
✔ Answer: 53 *(No regrouping needed here)*
---
##
✔ PART 2: Subtraction With Regrouping
When the top digit is smaller than the bottom digit in a column, we borrow (regroup) from the next higher place value.
---
1. 32 - 13
```
32
- 13
-----
```
- Ones: 2 < 3 → borrow 1 from tens → 12 - 3 =
9
- Tens: 3 becomes 2 → 2 - 1 =
1
✔ Answer: 19
---
2. 56 - 28
```
56
- 28
-----
```
- Ones: 6 < 8 → borrow → 16 - 8 =
8
- Tens: 5 becomes 4 → 4 - 2 =
2
✔ Answer: 28
---
3. 60 - 41
```
60
- 41
-----
```
- Ones: 0 < 1 → borrow → 10 - 1 =
9
- Tens: 6 becomes 5 → 5 - 4 =
1
✔ Answer: 19
---
4. 22 - 15
```
22
- 15
-----
```
- Ones: 2 < 5 → borrow → 12 - 5 =
7
- Tens: 2 becomes 1 → 1 - 1 =
0
✔ Answer: 7
---
5. 71 - 45
```
71
- 45
-----
```
- Ones: 1 < 5 → borrow → 11 - 5 =
6
- Tens: 7 becomes 6 → 6 - 4 =
2
✔ Answer: 26
---
6. 48 - 19
```
48
- 19
-----
```
- Ones: 8 < 9 → borrow → 18 - 9 =
9
- Tens: 4 becomes 3 → 3 - 1 =
2
✔ Answer: 29
---
7. 84 - 26
```
84
- 26
-----
```
- Ones: 4 < 6 → borrow → 14 - 6 =
8
- Tens: 8 becomes 7 → 7 - 2 =
5
✔ Answer: 58
---
8. 53 - 37
```
53
- 37
-----
```
- Ones: 3 < 7 → borrow → 13 - 7 =
6
- Tens: 5 becomes 4 → 4 - 3 =
1
✔ Answer: 16
---
## 📝 Final Answers Summary:
Addition With Regrouping:
1. 28 + 18 =
46
2. 43 + 17 =
60
3. 25 + 15 =
40
4. 59 + 24 =
83
5. 26 + 25 =
51
6. 56 + 15 =
71
7. 37 + 26 =
63
8. 42 + 11 =
53
Subtraction With Regrouping:
1. 32 - 13 =
19
2. 56 - 28 =
28
3. 60 - 41 =
19
4. 22 - 15 =
7
5. 71 - 45 =
26
6. 48 - 19 =
29
7. 84 - 26 =
58
8. 53 - 37 =
16
---
Let me know if you’d like to see these problems solved vertically with visual regrouping steps! 😊
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting two digit numbers with regrouping worksheet.
