3-Digit Addition Practice Worksheet with 25 Problems
-Adding-3-Numbers,-3-Digit-Addition-7.png)
Educational worksheet: Free 3 Digit Addition Worksheet - With Regrouping - Free4Classrooms. Download and print for classroom or home learning activities.
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Step-by-step solution for: Free 3 Digit Addition Worksheet - With Regrouping - Free4Classrooms
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Show Answer Key & Explanations
Step-by-step solution for: Free 3 Digit Addition Worksheet - With Regrouping - Free4Classrooms
Let's solve each of the 3-digit addition problems step by step. We'll add three numbers in each column and show the process for clarity.
---
```
784
108
+ 991
------
1883
```
- 4 + 8 + 1 = 13 → write 3, carry 1
- 8 + 0 + 9 + 1 = 18 → write 8, carry 1
- 7 + 1 + 9 + 1 = 18 → write 8, carry 1
- Final: 1883
---
```
886
779
+ 988
------
2653
```
- 6 + 9 + 8 = 23 → write 3, carry 2
- 8 + 7 + 8 + 2 = 25 → write 5, carry 2
- 8 + 7 + 9 + 2 = 26 → write 6, carry 2
- Final: 2653
---
```
606
213
+ 941
------
1760
```
- 6 + 3 + 1 = 10 → write 0, carry 1
- 0 + 1 + 4 + 1 = 6 → write 6
- 6 + 2 + 9 = 17 → write 7, carry 1
- Final: 1760
---
```
599
401
+ 163
------
1163
```
- 9 + 1 + 3 = 13 → write 3, carry 1
- 9 + 0 + 6 + 1 = 16 → write 6, carry 1
- 5 + 4 + 1 + 1 = 11 → write 1, carry 1
- Final: 1163
---
```
942
808
+ 803
------
2553
```
- 2 + 8 + 3 = 13 → write 3, carry 1
- 4 + 0 + 0 + 1 = 5 → write 5
- 9 + 8 + 8 = 25 → write 5, carry 2
- Final: 2553
---
```
621
616
+ 450
------
1687
```
- 1 + 6 + 0 = 7 → write 7
- 2 + 1 + 5 = 8 → write 8
- 6 + 6 + 4 = 16 → write 6, carry 1
- Final: 1687
---
```
170
497
+ 493
------
1160
```
- 0 + 7 + 3 = 10 → write 0, carry 1
- 7 + 9 + 9 + 1 = 26 → write 6, carry 2
- 1 + 4 + 4 + 2 = 11 → write 1, carry 1
- Final: 1160
---
```
128
123
+ 331
------
582
```
- 8 + 3 + 1 = 12 → write 2, carry 1
- 2 + 2 + 3 + 1 = 8 → write 8
- 1 + 1 + 3 = 5 → write 5
- Final: 582
---
```
730
316
+ 452
------
1498
```
- 0 + 6 + 2 = 8 → write 8
- 3 + 1 + 5 = 9 → write 9
- 7 + 3 + 4 = 14 → write 4, carry 1
- Final: 1498
---
```
428
665
+ 387
------
1480
```
- 8 + 5 + 7 = 20 → write 0, carry 2
- 2 + 6 + 8 + 2 = 18 → write 8, carry 1
- 4 + 6 + 3 + 1 = 14 → write 4, carry 1
- Final: 1480
---
```
686
113
+ 620
------
1419
```
- 6 + 3 + 0 = 9 → write 9
- 8 + 1 + 2 = 11 → write 1, carry 1
- 6 + 1 + 6 + 1 = 14 → write 4, carry 1
- Final: 1419
---
```
421
307
+ 470
------
1198
```
- 1 + 7 + 0 = 8 → write 8
- 2 + 0 + 7 = 9 → write 9
- 4 + 3 + 4 = 11 → write 1, carry 1
- Final: 1198
---
```
334
940
+ 918
------
2192
```
- 4 + 0 + 8 = 12 → write 2, carry 1
- 3 + 4 + 1 + 1 = 9 → write 9
- 3 + 9 + 9 = 21 → write 1, carry 2
- Final: 2192
---
```
942
667
+ 912
------
2521
```
- 2 + 7 + 2 = 11 → write 1, carry 1
- 4 + 6 + 1 + 1 = 12 → write 2, carry 1
- 9 + 6 + 9 + 1 = 25 → write 5, carry 2
- Final: 2521
---
```
680
346
+ 433
------
1459
```
- 0 + 6 + 3 = 9 → write 9
- 8 + 4 + 3 = 15 → write 5, carry 1
- 6 + 3 + 4 + 1 = 14 → write 4, carry 1
- Final: 1459
---
```
384
664
+ 475
------
1523
```
- 4 + 4 + 5 = 13 → write 3, carry 1
- 8 + 6 + 7 + 1 = 22 → write 2, carry 2
- 3 + 6 + 4 + 2 = 15 → write 5, carry 1
- Final: 1523
---
```
724
549
+ 763
------
2036
```
- 4 + 9 + 3 = 16 → write 6, carry 1
- 2 + 4 + 6 + 1 = 13 → write 3, carry 1
- 7 + 5 + 7 + 1 = 20 → write 0, carry 2
- Final: 2036
---
```
719
456
+ 172
------
1347
```
- 9 + 6 + 2 = 17 → write 7, carry 1
- 1 + 5 + 7 + 1 = 14 → write 4, carry 1
- 7 + 4 + 1 + 1 = 13 → write 3, carry 1
- Final: 1347
---
```
483
806
+ 996
------
2285
```
- 3 + 6 + 6 = 15 → write 5, carry 1
- 8 + 0 + 9 + 1 = 18 → write 8, carry 1
- 4 + 8 + 9 + 1 = 22 → write 2, carry 2
- Final: 2285
---
```
783
992
+ 509
------
2284
```
- 3 + 2 + 9 = 14 → write 4, carry 1
- 8 + 9 + 0 + 1 = 18 → write 8, carry 1
- 7 + 9 + 5 + 1 = 22 → write 2, carry 2
- Final: 2284
---
```
222
828
+ 707
------
1757
```
- 2 + 8 + 7 = 17 → write 7, carry 1
- 2 + 2 + 0 + 1 = 5 → write 5
- 2 + 8 + 7 = 17 → write 7, carry 1
- Final: 1757
---
```
273
707
+ 335
------
1315
```
- 3 + 7 + 5 = 15 → write 5, carry 1
- 7 + 0 + 3 + 1 = 11 → write 1, carry 1
- 2 + 7 + 3 + 1 = 13 → write 3, carry 1
- Final: 1315
---
```
274
858
+ 746
------
1878
```
- 4 + 8 + 6 = 18 → write 8, carry 1
- 7 + 5 + 4 + 1 = 17 → write 7, carry 1
- 2 + 8 + 7 + 1 = 18 → write 8, carry 1
- Final: 1878
---
```
347
489
+ 298
------
1134
```
- 7 + 9 + 8 = 24 → write 4, carry 2
- 4 + 8 + 9 + 2 = 23 → write 3, carry 2
- 3 + 4 + 2 + 2 = 11 → write 1, carry 1
- Final: 1134
---
```
392
741
+ 529
------
1662
```
- 2 + 1 + 9 = 12 → write 2, carry 1
- 9 + 4 + 2 + 1 = 16 → write 6, carry 1
- 3 + 7 + 5 + 1 = 16 → write 6, carry 1
- Final: 1662
---
Here are all the sums:
1. 1883
2. 2653
3. 1760
4. 1163
5. 2553
6. 1687
7. 1160
8. 582
9. 1498
10. 1480
11. 1419
12. 1198
13. 2192
14. 2521
15. 1459
16. 1523
17. 2036
18. 1347
19. 2285
20. 2284
21. 1757
22. 1315
23. 1878
24. 1134
25. 1662
✔ All calculations verified.
Let me know if you'd like this as a printable answer sheet!
---
1. 784 + 108 + 991
```
784
108
+ 991
------
1883
```
- 4 + 8 + 1 = 13 → write 3, carry 1
- 8 + 0 + 9 + 1 = 18 → write 8, carry 1
- 7 + 1 + 9 + 1 = 18 → write 8, carry 1
- Final: 1883
---
2. 886 + 779 + 988
```
886
779
+ 988
------
2653
```
- 6 + 9 + 8 = 23 → write 3, carry 2
- 8 + 7 + 8 + 2 = 25 → write 5, carry 2
- 8 + 7 + 9 + 2 = 26 → write 6, carry 2
- Final: 2653
---
3. 606 + 213 + 941
```
606
213
+ 941
------
1760
```
- 6 + 3 + 1 = 10 → write 0, carry 1
- 0 + 1 + 4 + 1 = 6 → write 6
- 6 + 2 + 9 = 17 → write 7, carry 1
- Final: 1760
---
4. 599 + 401 + 163
```
599
401
+ 163
------
1163
```
- 9 + 1 + 3 = 13 → write 3, carry 1
- 9 + 0 + 6 + 1 = 16 → write 6, carry 1
- 5 + 4 + 1 + 1 = 11 → write 1, carry 1
- Final: 1163
---
5. 942 + 808 + 803
```
942
808
+ 803
------
2553
```
- 2 + 8 + 3 = 13 → write 3, carry 1
- 4 + 0 + 0 + 1 = 5 → write 5
- 9 + 8 + 8 = 25 → write 5, carry 2
- Final: 2553
---
6. 621 + 616 + 450
```
621
616
+ 450
------
1687
```
- 1 + 6 + 0 = 7 → write 7
- 2 + 1 + 5 = 8 → write 8
- 6 + 6 + 4 = 16 → write 6, carry 1
- Final: 1687
---
7. 170 + 497 + 493
```
170
497
+ 493
------
1160
```
- 0 + 7 + 3 = 10 → write 0, carry 1
- 7 + 9 + 9 + 1 = 26 → write 6, carry 2
- 1 + 4 + 4 + 2 = 11 → write 1, carry 1
- Final: 1160
---
8. 128 + 123 + 331
```
128
123
+ 331
------
582
```
- 8 + 3 + 1 = 12 → write 2, carry 1
- 2 + 2 + 3 + 1 = 8 → write 8
- 1 + 1 + 3 = 5 → write 5
- Final: 582
---
9. 730 + 316 + 452
```
730
316
+ 452
------
1498
```
- 0 + 6 + 2 = 8 → write 8
- 3 + 1 + 5 = 9 → write 9
- 7 + 3 + 4 = 14 → write 4, carry 1
- Final: 1498
---
10. 428 + 665 + 387
```
428
665
+ 387
------
1480
```
- 8 + 5 + 7 = 20 → write 0, carry 2
- 2 + 6 + 8 + 2 = 18 → write 8, carry 1
- 4 + 6 + 3 + 1 = 14 → write 4, carry 1
- Final: 1480
---
11. 686 + 113 + 620
```
686
113
+ 620
------
1419
```
- 6 + 3 + 0 = 9 → write 9
- 8 + 1 + 2 = 11 → write 1, carry 1
- 6 + 1 + 6 + 1 = 14 → write 4, carry 1
- Final: 1419
---
12. 421 + 307 + 470
```
421
307
+ 470
------
1198
```
- 1 + 7 + 0 = 8 → write 8
- 2 + 0 + 7 = 9 → write 9
- 4 + 3 + 4 = 11 → write 1, carry 1
- Final: 1198
---
13. 334 + 940 + 918
```
334
940
+ 918
------
2192
```
- 4 + 0 + 8 = 12 → write 2, carry 1
- 3 + 4 + 1 + 1 = 9 → write 9
- 3 + 9 + 9 = 21 → write 1, carry 2
- Final: 2192
---
14. 942 + 667 + 912
```
942
667
+ 912
------
2521
```
- 2 + 7 + 2 = 11 → write 1, carry 1
- 4 + 6 + 1 + 1 = 12 → write 2, carry 1
- 9 + 6 + 9 + 1 = 25 → write 5, carry 2
- Final: 2521
---
15. 680 + 346 + 433
```
680
346
+ 433
------
1459
```
- 0 + 6 + 3 = 9 → write 9
- 8 + 4 + 3 = 15 → write 5, carry 1
- 6 + 3 + 4 + 1 = 14 → write 4, carry 1
- Final: 1459
---
16. 384 + 664 + 475
```
384
664
+ 475
------
1523
```
- 4 + 4 + 5 = 13 → write 3, carry 1
- 8 + 6 + 7 + 1 = 22 → write 2, carry 2
- 3 + 6 + 4 + 2 = 15 → write 5, carry 1
- Final: 1523
---
17. 724 + 549 + 763
```
724
549
+ 763
------
2036
```
- 4 + 9 + 3 = 16 → write 6, carry 1
- 2 + 4 + 6 + 1 = 13 → write 3, carry 1
- 7 + 5 + 7 + 1 = 20 → write 0, carry 2
- Final: 2036
---
18. 719 + 456 + 172
```
719
456
+ 172
------
1347
```
- 9 + 6 + 2 = 17 → write 7, carry 1
- 1 + 5 + 7 + 1 = 14 → write 4, carry 1
- 7 + 4 + 1 + 1 = 13 → write 3, carry 1
- Final: 1347
---
19. 483 + 806 + 996
```
483
806
+ 996
------
2285
```
- 3 + 6 + 6 = 15 → write 5, carry 1
- 8 + 0 + 9 + 1 = 18 → write 8, carry 1
- 4 + 8 + 9 + 1 = 22 → write 2, carry 2
- Final: 2285
---
20. 783 + 992 + 509
```
783
992
+ 509
------
2284
```
- 3 + 2 + 9 = 14 → write 4, carry 1
- 8 + 9 + 0 + 1 = 18 → write 8, carry 1
- 7 + 9 + 5 + 1 = 22 → write 2, carry 2
- Final: 2284
---
21. 222 + 828 + 707
```
222
828
+ 707
------
1757
```
- 2 + 8 + 7 = 17 → write 7, carry 1
- 2 + 2 + 0 + 1 = 5 → write 5
- 2 + 8 + 7 = 17 → write 7, carry 1
- Final: 1757
---
22. 273 + 707 + 335
```
273
707
+ 335
------
1315
```
- 3 + 7 + 5 = 15 → write 5, carry 1
- 7 + 0 + 3 + 1 = 11 → write 1, carry 1
- 2 + 7 + 3 + 1 = 13 → write 3, carry 1
- Final: 1315
---
23. 274 + 858 + 746
```
274
858
+ 746
------
1878
```
- 4 + 8 + 6 = 18 → write 8, carry 1
- 7 + 5 + 4 + 1 = 17 → write 7, carry 1
- 2 + 8 + 7 + 1 = 18 → write 8, carry 1
- Final: 1878
---
24. 347 + 489 + 298
```
347
489
+ 298
------
1134
```
- 7 + 9 + 8 = 24 → write 4, carry 2
- 4 + 8 + 9 + 2 = 23 → write 3, carry 2
- 3 + 4 + 2 + 2 = 11 → write 1, carry 1
- Final: 1134
---
25. 392 + 741 + 529
```
392
741
+ 529
------
1662
```
- 2 + 1 + 9 = 12 → write 2, carry 1
- 9 + 4 + 2 + 1 = 16 → write 6, carry 1
- 3 + 7 + 5 + 1 = 16 → write 6, carry 1
- Final: 1662
---
✔ Final Answers:
Here are all the sums:
1. 1883
2. 2653
3. 1760
4. 1163
5. 2553
6. 1687
7. 1160
8. 582
9. 1498
10. 1480
11. 1419
12. 1198
13. 2192
14. 2521
15. 1459
16. 1523
17. 2036
18. 1347
19. 2285
20. 2284
21. 1757
22. 1315
23. 1878
24. 1134
25. 1662
✔ All calculations verified.
Let me know if you'd like this as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of addition 3 digits worksheets.
