Let's solve each of the
3-digit addition problems step by step. We'll add the numbers column by column, starting from the right (ones place), then tens, then hundreds, carrying over when necessary.
---
1. 483 + 853
```
483
+ 853
-----
1336
```
- 3 + 3 = 6 (ones)
- 8 + 5 = 13 → write 3, carry 1
- 4 + 8 + 1 = 13 → write 13
✔ Answer: 1336
---
2. 223 + 147
```
223
+ 147
-----
370
```
- 3 + 7 = 10 → write 0, carry 1
- 2 + 4 + 1 = 7
- 2 + 1 = 3
✔ Answer: 370
---
3. 361 + 749
```
361
+ 749
-----
1110
```
- 1 + 9 = 10 → write 0, carry 1
- 6 + 4 + 1 = 11 → write 1, carry 1
- 3 + 7 + 1 = 11 → write 11
✔ Answer: 1110
---
4. 146 + 621
```
146
+ 621
-----
767
```
- 6 + 1 = 7
- 4 + 2 = 6
- 1 + 6 = 7
✔ Answer: 767
---
5. 356 + 951
```
356
+ 951
-----
1307
```
- 6 + 1 = 7
- 5 + 5 = 10 → write 0, carry 1
- 3 + 9 + 1 = 13 → write 13
✔ Answer: 1307
---
6. 241 + 614
```
241
+ 614
-----
855
```
- 1 + 4 = 5
- 4 + 1 = 5
- 2 + 6 = 8
✔ Answer: 855
---
7. 238 + 132
```
238
+ 132
-----
370
```
- 8 + 2 = 10 → write 0, carry 1
- 3 + 3 + 1 = 7
- 2 + 1 = 3
✔ Answer: 370
---
8. 643 + 132
```
643
+ 132
-----
775
```
- 3 + 2 = 5
- 4 + 3 = 7
- 6 + 1 = 7
✔ Answer: 775
---
9. 219 + 852
```
219
+ 852
-----
1071
```
- 9 + 2 = 11 → write 1, carry 1
- 1 + 5 + 1 = 7
- 2 + 8 = 10 → write 10
✔ Answer: 1071
---
10. 358 + 232
```
358
+ 232
-----
590
```
- 8 + 2 = 10 → write 0, carry 1
- 5 + 3 + 1 = 9
- 3 + 2 = 5
✔ Answer: 590
---
11. 178 + 335
```
178
+ 335
-----
513
```
- 8 + 5 = 13 → write 3, carry 1
- 7 + 3 + 1 = 11 → write 1, carry 1
- 1 + 3 + 1 = 5
✔ Answer: 513
---
12. 727 + 152
```
727
+ 152
-----
879
```
- 7 + 2 = 9
- 2 + 5 = 7
- 7 + 1 = 8
✔ Answer: 879
---
13. 382 + 266
```
382
+ 266
-----
648
```
- 2 + 6 = 8
- 8 + 6 = 14 → write 4, carry 1
- 3 + 2 + 1 = 6
✔ Answer: 648
---
14. 711 + 244
```
711
+ 244
-----
955
```
- 1 + 4 = 5
- 1 + 4 = 5
- 7 + 2 = 9
✔ Answer: 955
---
15. 455 + 782
```
455
+ 782
-----
1237
```
- 5 + 2 = 7
- 5 + 8 = 13 → write 3, carry 1
- 4 + 7 + 1 = 12 → write 12
✔ Answer: 1237
---
16. 468 + 481
```
468
+ 481
-----
949
```
- 8 + 1 = 9
- 6 + 8 = 14 → write 4, carry 1
- 4 + 4 + 1 = 9
✔ Answer: 949
---
##
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| 483 + 853 |
1336 |
| 223 + 147 |
370 |
| 361 + 749 |
1110 |
| 146 + 621 |
767 |
| 356 + 951 |
1307 |
| 241 + 614 |
855 |
| 238 + 132 |
370 |
| 643 + 132 |
775 |
| 219 + 852 |
1071 |
| 358 + 232 |
590 |
| 178 + 335 |
513 |
| 727 + 152 |
879 |
| 382 + 266 |
648 |
| 711 + 244 |
955 |
| 455 + 782 |
1237 |
| 468 + 481 |
949 |
---
💡
Tips for Solving:
- Always start from the
rightmost digit (ones place).
- Add digits in each column.
- If the sum is
10 or more, carry the extra to the next column.
- Double-check your work!
Let me know if you'd like this formatted as a printable answer key! 😊
Parent Tip: Review the logic above to help your child master the concept of math grade 4 worksheet.
