Math worksheet with three-digit addition and subtraction problems.
A math worksheet with addition and subtraction problems involving three-digit numbers, including spaces for name, teacher, score, and date.
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Show Answer Key & Explanations
Step-by-step solution for: Add And Subtract Multi-Digit Whole Numbers With Regrouping Worksheet
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Show Answer Key & Explanations
Step-by-step solution for: Add And Subtract Multi-Digit Whole Numbers With Regrouping Worksheet
Let's solve each of the arithmetic problems step by step. These are basic addition and subtraction problems involving three-digit numbers.
---
1. 475 - 379
- 475 - 379 = 96
*(5 - 9 can't be done, so borrow: 15 - 9 = 6; 6 - 7 can't be done, borrow: 16 - 7 = 9; 3 - 3 = 0 → 96)*
2. 972 - 932
- 972 - 932 = 40
*(2 - 2 = 0; 7 - 3 = 4; 9 - 9 = 0 → 40)*
3. 282 + 625
- 282 + 625 = 907
*(2 + 5 = 7; 8 + 2 = 10 → carry 1; 2 + 6 + 1 = 9 → 907)*
4. 144 + 925
- 144 + 925 = 1069
*(4 + 5 = 9; 4 + 2 = 6; 1 + 9 = 10 → 1069)*
5. 670 - 579
- 670 - 579 = 91
*(0 - 9 → borrow: 10 - 9 = 1; 6 - 7 → borrow: 16 - 7 = 9; 5 - 5 = 0 → 91)*
---
6. 832 - 620
- 832 - 620 = 212
*(2 - 0 = 2; 3 - 2 = 1; 8 - 6 = 2 → 212)*
7. 846 + 453
- 846 + 453 = 1299
*(6 + 3 = 9; 4 + 5 = 9; 8 + 4 = 12 → 1299)*
8. 203 + 550
- 203 + 550 = 753
*(3 + 0 = 3; 0 + 5 = 5; 2 + 5 = 7 → 753)*
9. 276 + 608
- 276 + 608 = 884
*(6 + 8 = 14 → write 4, carry 1; 7 + 0 + 1 = 8; 2 + 6 = 8 → 884)*
10. 899 - 821
- 899 - 821 = 78
*(9 - 1 = 8; 9 - 2 = 7; 8 - 8 = 0 → 78)*
---
11. 512 + 162
- 512 + 162 = 674
*(2 + 2 = 4; 1 + 6 = 7; 5 + 1 = 6 → 674)*
12. 673 - 314
- 673 - 314 = 359
*(3 - 4 → borrow: 13 - 4 = 9; 6 - 1 = 5; 5 - 3 = 2? Wait: 6 becomes 5 after borrow, then 5 - 1 = 4? Let's do it properly:
673 - 314:
Units: 3 - 4 → borrow → 13 - 4 = 9 (tens digit reduced from 7 to 6)
Tens: 6 - 1 = 5
Hundreds: 6 - 3 = 3 → 359)*
13. 243 + 389
- 243 + 389 = 632
*(3 + 9 = 12 → write 2, carry 1; 4 + 8 + 1 = 13 → write 3, carry 1; 2 + 3 + 1 = 6 → 632)*
14. 384 + 353
- 384 + 353 = 737
*(4 + 3 = 7; 8 + 5 = 13 → write 3, carry 1; 3 + 3 + 1 = 7 → 737)*
15. 877 - 686
- 877 - 686 = 191
*(7 - 6 = 1; 7 - 8 → borrow: 17 - 8 = 9; 7 - 6 = 1 → 191)*
---
16. 221 - 150
- 221 - 150 = 71
*(1 - 0 = 1; 2 - 5 → borrow: 12 - 5 = 7; 1 - 1 = 0 → 71)*
17. 852 + 553
- 852 + 553 = 1405
*(2 + 3 = 5; 5 + 5 = 10 → write 0, carry 1; 8 + 5 + 1 = 14 → 1405)*
18. 755 + 319
- 755 + 319 = 1074
*(5 + 9 = 14 → write 4, carry 1; 5 + 1 + 1 = 7; 7 + 3 = 10 → 1074)*
19. 544 - 132
- 544 - 132 = 412
*(4 - 2 = 2; 4 - 3 = 1; 5 - 1 = 4 → 412)*
20. 837 - 573
- 837 - 573 = 264
*(7 - 3 = 4; 3 - 7 → borrow: 13 - 7 = 6; 7 - 5 = 2 → 264)*
---
```
475 972 282 144 670
- 379 - 932 + 625 + 925 - 579
------ ------ ------ ------ ------
96 40 907 1069 91
832 846 203 276 899
- 620 + 453 + 550 + 608 - 821
------ ------ ------ ------ ------
212 1299 753 884 78
512 673 243 384 877
+ 162 - 314 + 389 + 353 - 686
------ ------ ------ ------ ------
674 359 632 737 191
221 852 755 544 837
- 150 + 553 + 319 - 132 - 573
------ ------ ------ ------ ------
71 1405 1074 412 264
```
---
✔ All problems solved correctly! Let me know if you'd like this formatted as a printable answer sheet.
---
Row 1:
1. 475 - 379
- 475 - 379 = 96
*(5 - 9 can't be done, so borrow: 15 - 9 = 6; 6 - 7 can't be done, borrow: 16 - 7 = 9; 3 - 3 = 0 → 96)*
2. 972 - 932
- 972 - 932 = 40
*(2 - 2 = 0; 7 - 3 = 4; 9 - 9 = 0 → 40)*
3. 282 + 625
- 282 + 625 = 907
*(2 + 5 = 7; 8 + 2 = 10 → carry 1; 2 + 6 + 1 = 9 → 907)*
4. 144 + 925
- 144 + 925 = 1069
*(4 + 5 = 9; 4 + 2 = 6; 1 + 9 = 10 → 1069)*
5. 670 - 579
- 670 - 579 = 91
*(0 - 9 → borrow: 10 - 9 = 1; 6 - 7 → borrow: 16 - 7 = 9; 5 - 5 = 0 → 91)*
---
Row 2:
6. 832 - 620
- 832 - 620 = 212
*(2 - 0 = 2; 3 - 2 = 1; 8 - 6 = 2 → 212)*
7. 846 + 453
- 846 + 453 = 1299
*(6 + 3 = 9; 4 + 5 = 9; 8 + 4 = 12 → 1299)*
8. 203 + 550
- 203 + 550 = 753
*(3 + 0 = 3; 0 + 5 = 5; 2 + 5 = 7 → 753)*
9. 276 + 608
- 276 + 608 = 884
*(6 + 8 = 14 → write 4, carry 1; 7 + 0 + 1 = 8; 2 + 6 = 8 → 884)*
10. 899 - 821
- 899 - 821 = 78
*(9 - 1 = 8; 9 - 2 = 7; 8 - 8 = 0 → 78)*
---
Row 3:
11. 512 + 162
- 512 + 162 = 674
*(2 + 2 = 4; 1 + 6 = 7; 5 + 1 = 6 → 674)*
12. 673 - 314
- 673 - 314 = 359
*(3 - 4 → borrow: 13 - 4 = 9; 6 - 1 = 5; 5 - 3 = 2? Wait: 6 becomes 5 after borrow, then 5 - 1 = 4? Let's do it properly:
673 - 314:
Units: 3 - 4 → borrow → 13 - 4 = 9 (tens digit reduced from 7 to 6)
Tens: 6 - 1 = 5
Hundreds: 6 - 3 = 3 → 359)*
13. 243 + 389
- 243 + 389 = 632
*(3 + 9 = 12 → write 2, carry 1; 4 + 8 + 1 = 13 → write 3, carry 1; 2 + 3 + 1 = 6 → 632)*
14. 384 + 353
- 384 + 353 = 737
*(4 + 3 = 7; 8 + 5 = 13 → write 3, carry 1; 3 + 3 + 1 = 7 → 737)*
15. 877 - 686
- 877 - 686 = 191
*(7 - 6 = 1; 7 - 8 → borrow: 17 - 8 = 9; 7 - 6 = 1 → 191)*
---
Row 4:
16. 221 - 150
- 221 - 150 = 71
*(1 - 0 = 1; 2 - 5 → borrow: 12 - 5 = 7; 1 - 1 = 0 → 71)*
17. 852 + 553
- 852 + 553 = 1405
*(2 + 3 = 5; 5 + 5 = 10 → write 0, carry 1; 8 + 5 + 1 = 14 → 1405)*
18. 755 + 319
- 755 + 319 = 1074
*(5 + 9 = 14 → write 4, carry 1; 5 + 1 + 1 = 7; 7 + 3 = 10 → 1074)*
19. 544 - 132
- 544 - 132 = 412
*(4 - 2 = 2; 4 - 3 = 1; 5 - 1 = 4 → 412)*
20. 837 - 573
- 837 - 573 = 264
*(7 - 3 = 4; 3 - 7 → borrow: 13 - 7 = 6; 7 - 5 = 2 → 264)*
---
✔ Final Answers:
```
475 972 282 144 670
- 379 - 932 + 625 + 925 - 579
------ ------ ------ ------ ------
96 40 907 1069 91
832 846 203 276 899
- 620 + 453 + 550 + 608 - 821
------ ------ ------ ------ ------
212 1299 753 884 78
512 673 243 384 877
+ 162 - 314 + 389 + 353 - 686
------ ------ ------ ------ ------
674 359 632 737 191
221 852 755 544 837
- 150 + 553 + 319 - 132 - 573
------ ------ ------ ------ ------
71 1405 1074 412 264
```
---
✔ All problems solved correctly! Let me know if you'd like this formatted as a printable answer sheet.
Parent Tip: Review the logic above to help your child master the concept of adding multi digit numbers worksheet.
