Here is the complete solution to all 20 problems on the worksheet, with step-by-step explanations for clarity.
---
Part 1: Add these numbers. Check your results by adding the columns in reverse order.
*(Note: “Adding columns in reverse order” means you can verify your answer by switching the top and bottom numbers — e.g., 153 + 148 is the same as 148 + 153 — since addition is commutative. We’ll compute each sum normally.)*
---
1. 153 + 148
```
153
+ 148
-----
301
```
✔ *Check:* 148 + 153 = 301 → Same result.
Answer: 301
---
2. 637 + 438
```
637
+ 438
-----
1075
```
✔ *Check:* 438 + 637 = 1075
Answer: 1075
---
3. 240 + 383
```
240
+ 383
-----
623
```
✔ *Check:* 383 + 240 = 623
Answer: 623
---
4. 339 + 506
```
339
+ 506
-----
845
```
✔ *Check:* 506 + 339 = 845
Answer: 845
---
5. 227 + 380
```
227
+ 380
-----
607
```
✔ *Check:* 380 + 227 = 607
Answer: 607
---
6. 683 + 594
```
683
+ 594
-----
1277
```
✔ *Check:* 594 + 683 = 1277
Answer: 1277
---
7. 455 + 263
```
455
+ 263
-----
718
```
✔ *Check:* 263 + 455 = 718
Answer: 718
---
8. 527 + 181
```
527
+ 181
-----
708
```
✔ *Check:* 181 + 527 = 708
Answer: 708
---
9. 296 + 162
```
296
+ 162
-----
458
```
✔ *Check:* 162 + 296 = 458
Answer: 458
---
10. 469 + 326
```
469
+ 326
-----
795
```
✔ *Check:* 326 + 469 = 795
Answer: 795
---
Part 2: Add these numbers. Remember to set them out in the same way as those above.
*(We’ll write them vertically for consistency, even though they’re written horizontally here.)*
---
11. 357 + 546
```
357
+ 546
-----
903
```
Answer: 903
---
12. 196 + 493
```
196
+ 493
-----
689
```
Answer: 689
---
13. 663 + 197
```
663
+ 197
-----
860
```
Answer: 860
---
14. 766 + 151
```
766
+ 151
-----
917
```
Answer: 917
---
15. 216 + 748
```
216
+ 748
-----
964
```
Answer: 964
---
16. 236 + 293
```
236
+ 293
-----
529
```
Answer: 529
---
Part 3: Calculate the answers to the following problems:
---
17. What is the total of 653 and 256?
This means: 653 + 256
```
653
+ 256
-----
909
```
Answer: 909
---
18. What is the sum of 708 and 295?
This means: 708 + 295
```
708
+ 295
-----
1003
```
Answer: 1003
---
19. Karen and Kelvin each bought a jar of sweets. Karen had 247 in her jar. Kelvin had 256 in his. How many did they have together?
Total = Karen’s sweets + Kelvin’s sweets = 247 + 256
```
247
+ 256
-----
503
```
Answer: 503 sweets
---
20. Find the total of 374 and 628.
This means: 374 + 628
```
374
+ 628
-----
1002
```
Answer: 1002
---
##
✔ Final Answers Summary:
1. 301
2. 1075
3. 623
4. 845
5. 607
6. 1277
7. 718
8. 708
9. 458
10. 795
11. 903
12. 689
13. 860
14. 917
15. 964
16. 529
17. 909
18. 1003
19. 503
20. 1002
---
💡
Tip for Students: Always align digits by place value (ones under ones, tens under tens, etc.) when adding vertically. Carry over any number greater than 9 to the next column. You can check your work by reversing the addends — the sum should be the same!
Let me know if you’d like a printable version or more practice!
Parent Tip: Review the logic above to help your child master the concept of addition of whole numbers worksheet for grade 2.
