3rd Grade Addition Worksheets with Answer Key - Free Printable
Educational worksheet: 3rd Grade Addition Worksheets with Answer Key. Download and print for classroom or home learning activities.
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Step-by-step solution for: 3rd Grade Addition Worksheets with Answer Key
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Show Answer Key & Explanations
Step-by-step solution for: 3rd Grade Addition Worksheets with Answer Key
Let's solve each addition problem step by step. We'll add the numbers column by column, starting from the right (ones place), and carry over if necessary.
---
```
124
+ 23
-----
147
```
- 4 + 3 = 7
- 2 + 2 = 4
- 1 + 0 = 1
✔ 147
---
```
153
+ 61
-----
214
```
- 3 + 1 = 4
- 5 + 6 = 11 → write 1, carry 1
- 1 + 1 + 0 = 2
✔ 214
---
```
158
+ 26
-----
184
```
- 8 + 6 = 14 → write 4, carry 1
- 5 + 2 + 1 = 8
- 1 + 0 = 1
✔ 184
---
```
167
+ 74
-----
241
```
- 7 + 4 = 11 → write 1, carry 1
- 6 + 7 + 1 = 14 → write 4, carry 1
- 1 + 1 = 2
✔ 241
---
```
206
+ 15
-----
221
```
- 6 + 5 = 11 → write 1, carry 1
- 0 + 1 + 1 = 2
- 2 + 0 = 2
✔ 221
---
```
223
+ 79
-----
302
```
- 3 + 9 = 12 → write 2, carry 1
- 2 + 7 + 1 = 10 → write 0, carry 1
- 2 + 0 + 1 = 3
✔ 302
---
```
245
+ 54
-----
299
```
- 5 + 4 = 9
- 4 + 5 = 9
- 2 + 0 = 2
✔ 299
---
```
438
+ 27
-----
465
```
- 8 + 7 = 15 → write 5, carry 1
- 3 + 2 + 1 = 6
- 4 + 0 = 4
✔ 465
---
```
103
+ 108
-----
211
```
- 3 + 8 = 11 → write 1, carry 1
- 0 + 0 + 1 = 1
- 1 + 1 = 2
✔ 211
---
```
146
+ 230
-----
376
```
- 6 + 0 = 6
- 4 + 3 = 7
- 1 + 2 = 3
✔ 376
---
```
174
+ 187
-----
361
```
- 4 + 7 = 11 → write 1, carry 1
- 7 + 8 + 1 = 16 → write 6, carry 1
- 1 + 1 + 1 = 3
✔ 361
---
```
137
+ 126
-----
263
```
- 7 + 6 = 13 → write 3, carry 1
- 3 + 2 + 1 = 6
- 1 + 1 = 2
✔ 263
---
```
209
+ 139
-----
348
```
- 9 + 9 = 18 → write 8, carry 1
- 0 + 3 + 1 = 4
- 2 + 1 = 3
✔ 348
---
```
651
+ 301
-----
952
```
- 1 + 1 = 2
- 5 + 0 = 5
- 6 + 3 = 9
✔ 952
---
```
442
+ 454
-----
896
```
- 2 + 4 = 6
- 4 + 5 = 9
- 4 + 4 = 8
✔ 896
---
```
326
+ 621
-----
947
```
- 6 + 1 = 7
- 2 + 2 = 4
- 3 + 6 = 9
✔ 947
---
```
995
+ 102
-----
1097
```
- 5 + 2 = 7
- 9 + 0 = 9
- 9 + 1 = 10 → write 0, carry 1
- Carry 1 → 1
✔ 1097
---
```
922
+ 123
-----
1045
```
- 2 + 3 = 5
- 2 + 2 = 4
- 9 + 1 = 10 → write 0, carry 1
- Carry 1 → 1
✔ 1045
---
```
888
+ 249
-----
1137
```
- 8 + 9 = 17 → write 7, carry 1
- 8 + 4 + 1 = 13 → write 3, carry 1
- 8 + 2 + 1 = 11 → write 1, carry 1
- Carry 1 → 1
✔ 1137
---
```
473
+ 153
-----
626
```
- 3 + 3 = 6
- 7 + 5 = 12 → write 2, carry 1
- 4 + 1 + 1 = 6
✔ 626
---
| Problem | Answer |
|--------|--------|
| 124 + 23 | 147 |
| 153 + 61 | 214 |
| 158 + 26 | 184 |
| 167 + 74 | 241 |
| 206 + 15 | 221 |
| 223 + 79 | 302 |
| 245 + 54 | 299 |
| 438 + 27 | 465 |
| 103 + 108 | 211 |
| 146 + 230 | 376 |
| 174 + 187 | 361 |
| 137 + 126 | 263 |
| 209 + 139 | 348 |
| 651 + 301 | 952 |
| 442 + 454 | 896 |
| 326 + 621 | 947 |
| 995 + 102 | 1097 |
| 922 + 123 | 1045 |
| 888 + 249 | 1137 |
| 473 + 153 | 626 |
Let me know if you'd like this in a printable format or with steps shown!
---
1. 124 + 23
```
124
+ 23
-----
147
```
- 4 + 3 = 7
- 2 + 2 = 4
- 1 + 0 = 1
✔ 147
---
2. 153 + 61
```
153
+ 61
-----
214
```
- 3 + 1 = 4
- 5 + 6 = 11 → write 1, carry 1
- 1 + 1 + 0 = 2
✔ 214
---
3. 158 + 26
```
158
+ 26
-----
184
```
- 8 + 6 = 14 → write 4, carry 1
- 5 + 2 + 1 = 8
- 1 + 0 = 1
✔ 184
---
4. 167 + 74
```
167
+ 74
-----
241
```
- 7 + 4 = 11 → write 1, carry 1
- 6 + 7 + 1 = 14 → write 4, carry 1
- 1 + 1 = 2
✔ 241
---
5. 206 + 15
```
206
+ 15
-----
221
```
- 6 + 5 = 11 → write 1, carry 1
- 0 + 1 + 1 = 2
- 2 + 0 = 2
✔ 221
---
6. 223 + 79
```
223
+ 79
-----
302
```
- 3 + 9 = 12 → write 2, carry 1
- 2 + 7 + 1 = 10 → write 0, carry 1
- 2 + 0 + 1 = 3
✔ 302
---
7. 245 + 54
```
245
+ 54
-----
299
```
- 5 + 4 = 9
- 4 + 5 = 9
- 2 + 0 = 2
✔ 299
---
8. 438 + 27
```
438
+ 27
-----
465
```
- 8 + 7 = 15 → write 5, carry 1
- 3 + 2 + 1 = 6
- 4 + 0 = 4
✔ 465
---
9. 103 + 108
```
103
+ 108
-----
211
```
- 3 + 8 = 11 → write 1, carry 1
- 0 + 0 + 1 = 1
- 1 + 1 = 2
✔ 211
---
10. 146 + 230
```
146
+ 230
-----
376
```
- 6 + 0 = 6
- 4 + 3 = 7
- 1 + 2 = 3
✔ 376
---
11. 174 + 187
```
174
+ 187
-----
361
```
- 4 + 7 = 11 → write 1, carry 1
- 7 + 8 + 1 = 16 → write 6, carry 1
- 1 + 1 + 1 = 3
✔ 361
---
12. 137 + 126
```
137
+ 126
-----
263
```
- 7 + 6 = 13 → write 3, carry 1
- 3 + 2 + 1 = 6
- 1 + 1 = 2
✔ 263
---
13. 209 + 139
```
209
+ 139
-----
348
```
- 9 + 9 = 18 → write 8, carry 1
- 0 + 3 + 1 = 4
- 2 + 1 = 3
✔ 348
---
14. 651 + 301
```
651
+ 301
-----
952
```
- 1 + 1 = 2
- 5 + 0 = 5
- 6 + 3 = 9
✔ 952
---
15. 442 + 454
```
442
+ 454
-----
896
```
- 2 + 4 = 6
- 4 + 5 = 9
- 4 + 4 = 8
✔ 896
---
16. 326 + 621
```
326
+ 621
-----
947
```
- 6 + 1 = 7
- 2 + 2 = 4
- 3 + 6 = 9
✔ 947
---
17. 995 + 102
```
995
+ 102
-----
1097
```
- 5 + 2 = 7
- 9 + 0 = 9
- 9 + 1 = 10 → write 0, carry 1
- Carry 1 → 1
✔ 1097
---
18. 922 + 123
```
922
+ 123
-----
1045
```
- 2 + 3 = 5
- 2 + 2 = 4
- 9 + 1 = 10 → write 0, carry 1
- Carry 1 → 1
✔ 1045
---
19. 888 + 249
```
888
+ 249
-----
1137
```
- 8 + 9 = 17 → write 7, carry 1
- 8 + 4 + 1 = 13 → write 3, carry 1
- 8 + 2 + 1 = 11 → write 1, carry 1
- Carry 1 → 1
✔ 1137
---
20. 473 + 153
```
473
+ 153
-----
626
```
- 3 + 3 = 6
- 7 + 5 = 12 → write 2, carry 1
- 4 + 1 + 1 = 6
✔ 626
---
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| 124 + 23 | 147 |
| 153 + 61 | 214 |
| 158 + 26 | 184 |
| 167 + 74 | 241 |
| 206 + 15 | 221 |
| 223 + 79 | 302 |
| 245 + 54 | 299 |
| 438 + 27 | 465 |
| 103 + 108 | 211 |
| 146 + 230 | 376 |
| 174 + 187 | 361 |
| 137 + 126 | 263 |
| 209 + 139 | 348 |
| 651 + 301 | 952 |
| 442 + 454 | 896 |
| 326 + 621 | 947 |
| 995 + 102 | 1097 |
| 922 + 123 | 1045 |
| 888 + 249 | 1137 |
| 473 + 153 | 626 |
Let me know if you'd like this in a printable format or with steps shown!
Parent Tip: Review the logic above to help your child master the concept of addition worksheet with answers.
