4 Digit Addition With Regrouping Worksheets - Free Printable

Let's solve each addition problem step by step. We'll add the numbers column by column, starting from the rightmost digit (ones place), carrying over when necessary.

---

Row 1:

1. 5521 + 7780
```
5521
+7780
-----
13301
```
- 1 + 0 = 1
- 2 + 8 = 10 → write 0, carry 1
- 5 + 7 + 1 = 13 → write 3, carry 1
- 5 + 7 + 1 = 13 → write 13
→ 13,301

2. 9725 + 3130
```
9725
+3130
-----
12855
```
- 5 + 0 = 5
- 2 + 3 = 5
- 7 + 1 = 8
- 9 + 3 = 12
→ 12,855

3. 2269 + 6484
```
2269
+6484
-----
8753
```
- 9 + 4 = 13 → write 3, carry 1
- 6 + 8 + 1 = 15 → write 5, carry 1
- 2 + 4 + 1 = 7
- 2 + 6 = 8
→ 8,753

4. 1873 + 7798
```
1873
+7798
-----
9671
```
- 3 + 8 = 11 → write 1, carry 1
- 7 + 9 + 1 = 17 → write 7, carry 1
- 8 + 7 + 1 = 16 → write 6, carry 1
- 1 + 7 + 1 = 9
→ 9,671

5. 5642 + 9161
```
5642
+9161
-----
14803
```
- 2 + 1 = 3
- 4 + 6 = 10 → write 0, carry 1
- 6 + 1 + 1 = 8
- 5 + 9 = 14
→ 14,803

---

Row 2:

6. 6708 + 5961
```
6708
+5961
-----
12669
```
- 8 + 1 = 9
- 0 + 6 = 6
- 7 + 9 = 16 → write 6, carry 1
- 6 + 5 + 1 = 12
→ 12,669

7. 8402 + 8204
```
8402
+8204
-----
16606
```
- 2 + 4 = 6
- 0 + 0 = 0
- 4 + 2 = 6
- 8 + 8 = 16
→ 16,606

8. 9045 + 1585
```
9045
+1585
-----
10630
```
- 5 + 5 = 10 → write 0, carry 1
- 4 + 8 + 1 = 13 → write 3, carry 1
- 0 + 5 + 1 = 6
- 9 + 1 = 10
→ 10,630

9. 9171 + 9764
```
9171
+9764
-----
18935
```
- 1 + 4 = 5
- 7 + 6 = 13 → write 3, carry 1
- 1 + 7 + 1 = 9
- 9 + 9 = 18
→ 18,935

10. 6843 + 2746
```
6843
+2746
-----
9589
```
- 3 + 6 = 9
- 4 + 4 = 8
- 8 + 7 = 15 → write 5, carry 1
- 6 + 2 + 1 = 9
→ 9,589

---

Row 3:

11. 2455 + 9686
```
2455
+9686
-----
12141
```
- 5 + 6 = 11 → write 1, carry 1
- 5 + 8 + 1 = 14 → write 4, carry 1
- 4 + 6 + 1 = 11 → write 1, carry 1
- 2 + 9 + 1 = 12
→ 12,141

12. 9330 + 6119
```
9330
+6119
-----
15449
```
- 0 + 9 = 9
- 3 + 1 = 4
- 3 + 1 = 4
- 9 + 6 = 15
→ 15,449

13. 5612 + 6082
```
5612
+6082
-----
11694
```
- 2 + 2 = 4
- 1 + 8 = 9
- 6 + 0 = 6
- 5 + 6 = 11
→ 11,694

14. 2947 + 3770
```
2947
+3770
-----
6717
```
- 7 + 0 = 7
- 4 + 7 = 11 → write 1, carry 1
- 9 + 7 + 1 = 17 → write 7, carry 1
- 2 + 3 + 1 = 6
→ 6,717

15. 3016 + 3435
```
3016
+3435
-----
6451
```
- 6 + 5 = 11 → write 1, carry 1
- 1 + 3 + 1 = 5
- 0 + 4 = 4
- 3 + 3 = 6
→ 6,451

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✔ Final Answers:

| Problem | Answer |
|--------|--------|
| 5521 + 7780 | 13,301 |
| 9725 + 3130 | 12,855 |
| 2269 + 6484 | 8,753 |
| 1873 + 7798 | 9,671 |
| 5642 + 9161 | 14,803 |
| 6708 + 5961 | 12,669 |
| 8402 + 8204 | 16,606 |
| 9045 + 1585 | 10,630 |
| 9171 + 9764 | 18,935 |
| 6843 + 2746 | 9,589 |
| 2455 + 9686 | 12,141 |
| 9330 + 6119 | 15,449 |
| 5612 + 6082 | 11,694 |
| 2947 + 3770 | 6,717 |
| 3016 + 3435 | 6,451 |

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✔ All problems solved correctly using standard addition with regrouping (carrying). Let me know if you'd like a printable version or explanation for any specific problem!