Printable math worksheet for practicing addition and subtraction with regrouping, ideal for elementary students.
Math worksheet titled "Add or Subtract with Regrouping" featuring 20 problems involving addition and subtraction with regrouping, including numbers up to four digits.
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Step-by-step solution for: Addition and Subtraction with Regrouping Worksheets with Answer Key
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Show Answer Key & Explanations
Step-by-step solution for: Addition and Subtraction with Regrouping Worksheets with Answer Key
Let's solve each of the 20 problems on the worksheet "Add or Subtract with Regrouping" step by step. We'll go through each one, showing the work and explaining any regrouping (carrying or borrowing) needed.
---
```
292
+ 924
-----
1216
```
- Ones: 2 + 4 = 6
- Tens: 9 + 2 = 11 → write 1, carry 1
- Hundreds: 2 + 9 + 1 (carry) = 12 → write 2, carry 1 to thousands
- Thousands: 1
✔ Answer: 1216
---
```
517
- 189
-----
328
```
- Ones: 7 - 9 → can't do, borrow from tens
- 17 - 9 = 8, tens digit becomes 0
- Tens: 0 - 8 → can't do, borrow from hundreds
- 10 - 8 = 2, hundreds become 4
- Hundreds: 4 - 1 = 3
✔ Answer: 328
---
```
247
- 178
-----
69
```
- Ones: 7 - 8 → borrow → 17 - 8 = 9, tens become 3
- Tens: 3 - 7 → borrow → 13 - 7 = 6, hundreds become 1
- Hundreds: 1 - 1 = 0
✔ Answer: 69
---
```
679
+ 238
-----
917
```
- Ones: 9 + 8 = 17 → write 7, carry 1
- Tens: 7 + 3 + 1 = 11 → write 1, carry 1
- Hundreds: 6 + 2 + 1 = 9
✔ Answer: 917
---
```
677
- 369
-----
308
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 6
- Tens: 6 - 6 = 0
- Hundreds: 6 - 3 = 3
✔ Answer: 308
---
```
271
+ 399
-----
670
```
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 7 + 9 + 1 = 17 → write 7, carry 1
- Hundreds: 2 + 3 + 1 = 6
✔ Answer: 670
---
```
457
+ 469
-----
926
```
- Ones: 7 + 9 = 16 → write 6, carry 1
- Tens: 5 + 6 + 1 = 12 → write 2, carry 1
- Hundreds: 4 + 4 + 1 = 9
✔ Answer: 926
---
```
228
- 119
-----
109
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 1
- Tens: 1 - 1 = 0
- Hundreds: 2 - 1 = 1
✔ Answer: 109
---
```
534
+ 392
-----
926
```
- Ones: 4 + 2 = 6
- Tens: 3 + 9 = 12 → write 2, carry 1
- Hundreds: 5 + 3 + 1 = 9
✔ Answer: 926
---
```
198
+ 233
-----
431
```
- Ones: 8 + 3 = 11 → write 1, carry 1
- Tens: 9 + 3 + 1 = 13 → write 3, carry 1
- Hundreds: 1 + 2 + 1 = 4
✔ Answer: 431
---
```
448
- 229
-----
219
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 3
- Tens: 3 - 2 = 1
- Hundreds: 4 - 2 = 2
✔ Answer: 219
---
```
397
- 188
-----
209
```
- Ones: 7 - 8 → borrow → 17 - 8 = 9, tens become 8
- Tens: 8 - 8 = 0
- Hundreds: 3 - 1 = 2
✔ Answer: 209
---
```
679
+ 443
-----
1122
```
- Ones: 9 + 3 = 12 → write 2, carry 1
- Tens: 7 + 4 + 1 = 12 → write 2, carry 1
- Hundreds: 6 + 4 + 1 = 11 → write 1, carry 1 to thousands
- Thousands: 1
✔ Answer: 1122
---
```
662
- 398
-----
264
```
- Ones: 2 - 8 → borrow → 12 - 8 = 4, tens become 5
- Tens: 5 - 9 → borrow → 15 - 9 = 6, hundreds become 5
- Hundreds: 5 - 3 = 2
✔ Answer: 264
---
```
367
- 199
-----
168
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 5
- Tens: 5 - 9 → borrow → 15 - 9 = 6, hundreds become 2
- Hundreds: 2 - 1 = 1
✔ Answer: 168
---
```
558
+ 344
-----
902
```
- Ones: 8 + 4 = 12 → write 2, carry 1
- Tens: 5 + 4 + 1 = 10 → write 0, carry 1
- Hundreds: 5 + 3 + 1 = 9
✔ Answer: 902
---
```
672
+ 929
-----
1601
```
- Ones: 2 + 9 = 11 → write 1, carry 1
- Tens: 7 + 2 + 1 = 10 → write 0, carry 1
- Hundreds: 6 + 9 + 1 = 16 → write 6, carry 1 to thousands
- Thousands: 1
✔ Answer: 1601
---
```
777
- 229
-----
548
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 6
- Tens: 6 - 2 = 4
- Hundreds: 7 - 2 = 5
✔ Answer: 548
---
```
888
- 379
-----
509
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 7
- Tens: 7 - 7 = 0
- Hundreds: 8 - 3 = 5
✔ Answer: 509
---
```
928
- 339
-----
589
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 1
- Tens: 1 - 3 → borrow → 11 - 3 = 8, hundreds become 8
- Hundreds: 8 - 3 = 5
✔ Answer: 589
---
| # | Problem | Answer |
|---|----------------|--------|
| 1 | 292 + 924 | 1216 |
| 2 | 517 - 189 | 328 |
| 3 | 247 - 178 | 69 |
| 4 | 679 + 238 | 917 |
| 5 | 677 - 369 | 308 |
| 6 | 271 + 399 | 670 |
| 7 | 457 + 469 | 926 |
| 8 | 228 - 119 | 109 |
| 9 | 534 + 392 | 926 |
|10 | 198 + 233 | 431 |
|11 | 448 - 229 | 219 |
|12 | 397 - 188 | 209 |
|13 | 679 + 443 | 1122 |
|14 | 662 - 398 | 264 |
|15 | 367 - 199 | 168 |
|16 | 558 + 344 | 902 |
|17 | 672 + 929 | 1601 |
|18 | 777 - 229 | 548 |
|19 | 888 - 379 | 509 |
|20 | 928 - 339 | 589 |
---
All problems involve addition or subtraction with regrouping, meaning you must borrow (subtract) or carry (add) when digits in a column exceed 9 or require borrowing. Each problem was solved carefully, ensuring proper place value alignment and handling of carries/borrows.
Let me know if you'd like this formatted as a printable answer key!
---
1. 292 + 924
```
292
+ 924
-----
1216
```
- Ones: 2 + 4 = 6
- Tens: 9 + 2 = 11 → write 1, carry 1
- Hundreds: 2 + 9 + 1 (carry) = 12 → write 2, carry 1 to thousands
- Thousands: 1
✔ Answer: 1216
---
2. 517 - 189
```
517
- 189
-----
328
```
- Ones: 7 - 9 → can't do, borrow from tens
- 17 - 9 = 8, tens digit becomes 0
- Tens: 0 - 8 → can't do, borrow from hundreds
- 10 - 8 = 2, hundreds become 4
- Hundreds: 4 - 1 = 3
✔ Answer: 328
---
3. 247 - 178
```
247
- 178
-----
69
```
- Ones: 7 - 8 → borrow → 17 - 8 = 9, tens become 3
- Tens: 3 - 7 → borrow → 13 - 7 = 6, hundreds become 1
- Hundreds: 1 - 1 = 0
✔ Answer: 69
---
4. 679 + 238
```
679
+ 238
-----
917
```
- Ones: 9 + 8 = 17 → write 7, carry 1
- Tens: 7 + 3 + 1 = 11 → write 1, carry 1
- Hundreds: 6 + 2 + 1 = 9
✔ Answer: 917
---
5. 677 - 369
```
677
- 369
-----
308
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 6
- Tens: 6 - 6 = 0
- Hundreds: 6 - 3 = 3
✔ Answer: 308
---
6. 271 + 399
```
271
+ 399
-----
670
```
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 7 + 9 + 1 = 17 → write 7, carry 1
- Hundreds: 2 + 3 + 1 = 6
✔ Answer: 670
---
7. 457 + 469
```
457
+ 469
-----
926
```
- Ones: 7 + 9 = 16 → write 6, carry 1
- Tens: 5 + 6 + 1 = 12 → write 2, carry 1
- Hundreds: 4 + 4 + 1 = 9
✔ Answer: 926
---
8. 228 - 119
```
228
- 119
-----
109
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 1
- Tens: 1 - 1 = 0
- Hundreds: 2 - 1 = 1
✔ Answer: 109
---
9. 534 + 392
```
534
+ 392
-----
926
```
- Ones: 4 + 2 = 6
- Tens: 3 + 9 = 12 → write 2, carry 1
- Hundreds: 5 + 3 + 1 = 9
✔ Answer: 926
---
10. 198 + 233
```
198
+ 233
-----
431
```
- Ones: 8 + 3 = 11 → write 1, carry 1
- Tens: 9 + 3 + 1 = 13 → write 3, carry 1
- Hundreds: 1 + 2 + 1 = 4
✔ Answer: 431
---
11. 448 - 229
```
448
- 229
-----
219
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 3
- Tens: 3 - 2 = 1
- Hundreds: 4 - 2 = 2
✔ Answer: 219
---
12. 397 - 188
```
397
- 188
-----
209
```
- Ones: 7 - 8 → borrow → 17 - 8 = 9, tens become 8
- Tens: 8 - 8 = 0
- Hundreds: 3 - 1 = 2
✔ Answer: 209
---
13. 679 + 443
```
679
+ 443
-----
1122
```
- Ones: 9 + 3 = 12 → write 2, carry 1
- Tens: 7 + 4 + 1 = 12 → write 2, carry 1
- Hundreds: 6 + 4 + 1 = 11 → write 1, carry 1 to thousands
- Thousands: 1
✔ Answer: 1122
---
14. 662 - 398
```
662
- 398
-----
264
```
- Ones: 2 - 8 → borrow → 12 - 8 = 4, tens become 5
- Tens: 5 - 9 → borrow → 15 - 9 = 6, hundreds become 5
- Hundreds: 5 - 3 = 2
✔ Answer: 264
---
15. 367 - 199
```
367
- 199
-----
168
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 5
- Tens: 5 - 9 → borrow → 15 - 9 = 6, hundreds become 2
- Hundreds: 2 - 1 = 1
✔ Answer: 168
---
16. 558 + 344
```
558
+ 344
-----
902
```
- Ones: 8 + 4 = 12 → write 2, carry 1
- Tens: 5 + 4 + 1 = 10 → write 0, carry 1
- Hundreds: 5 + 3 + 1 = 9
✔ Answer: 902
---
17. 672 + 929
```
672
+ 929
-----
1601
```
- Ones: 2 + 9 = 11 → write 1, carry 1
- Tens: 7 + 2 + 1 = 10 → write 0, carry 1
- Hundreds: 6 + 9 + 1 = 16 → write 6, carry 1 to thousands
- Thousands: 1
✔ Answer: 1601
---
18. 777 - 229
```
777
- 229
-----
548
```
- Ones: 7 - 9 → borrow → 17 - 9 = 8, tens become 6
- Tens: 6 - 2 = 4
- Hundreds: 7 - 2 = 5
✔ Answer: 548
---
19. 888 - 379
```
888
- 379
-----
509
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 7
- Tens: 7 - 7 = 0
- Hundreds: 8 - 3 = 5
✔ Answer: 509
---
20. 928 - 339
```
928
- 339
-----
589
```
- Ones: 8 - 9 → borrow → 18 - 9 = 9, tens become 1
- Tens: 1 - 3 → borrow → 11 - 3 = 8, hundreds become 8
- Hundreds: 8 - 3 = 5
✔ Answer: 589
---
✔ Final Answers:
| # | Problem | Answer |
|---|----------------|--------|
| 1 | 292 + 924 | 1216 |
| 2 | 517 - 189 | 328 |
| 3 | 247 - 178 | 69 |
| 4 | 679 + 238 | 917 |
| 5 | 677 - 369 | 308 |
| 6 | 271 + 399 | 670 |
| 7 | 457 + 469 | 926 |
| 8 | 228 - 119 | 109 |
| 9 | 534 + 392 | 926 |
|10 | 198 + 233 | 431 |
|11 | 448 - 229 | 219 |
|12 | 397 - 188 | 209 |
|13 | 679 + 443 | 1122 |
|14 | 662 - 398 | 264 |
|15 | 367 - 199 | 168 |
|16 | 558 + 344 | 902 |
|17 | 672 + 929 | 1601 |
|18 | 777 - 229 | 548 |
|19 | 888 - 379 | 509 |
|20 | 928 - 339 | 589 |
---
🔍 Summary:
All problems involve addition or subtraction with regrouping, meaning you must borrow (subtract) or carry (add) when digits in a column exceed 9 or require borrowing. Each problem was solved carefully, ensuring proper place value alignment and handling of carries/borrows.
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 subtraction with regrouping worksheet.
