Let's solve each subtraction problem step by step using the standard algorithm (borrowing when needed). We'll go through each of the six problems one at a time.
---
Problem 1:
```
925
- 389
-----
```
Step-by-step:
1.
Ones place: 5 - 9 → Can't do, so borrow from tens.
- Tens digit is 2 → becomes 1, and ones become 15.
- 15 - 9 =
6
2.
Tens place: 1 (after borrowing) - 8 → Can't do, so borrow from hundreds.
- Hundreds digit is 9 → becomes 8, and tens become 11.
- 11 - 8 =
3
3.
Hundreds place: 8 - 3 =
5
✔ Result:
536
---
Problem 2:
```
842
- 478
-----
```
Step-by-step:
1.
Ones place: 2 - 8 → Can't do, borrow from tens.
- Tens digit is 4 → becomes 3, ones become 12.
- 12 - 8 =
4
2.
Tens place: 3 - 7 → Can't do, borrow from hundreds.
- Hundreds digit is 8 → becomes 7, tens become 13.
- 13 - 7 =
6
3.
Hundreds place: 7 - 4 =
3
✔ Result:
364
---
Problem 3:
```
523
- 297
-----
```
Step-by-step:
1.
Ones place: 3 - 7 → Can't do, borrow from tens.
- Tens digit is 2 → becomes 1, ones become 13.
- 13 - 7 =
6
2.
Tens place: 1 - 9 → Can't do, borrow from hundreds.
- Hundreds digit is 5 → becomes 4, tens become 11.
- 11 - 9 =
2
3.
Hundreds place: 4 - 2 =
2
✔ Result:
226
---
Problem 4:
```
634
- 379
-----
```
Step-by-step:
1.
Ones place: 4 - 9 → Can't do, borrow from tens.
- Tens digit is 3 → becomes 2, ones become 14.
- 14 - 9 =
5
2.
Tens place: 2 - 7 → Can't do, borrow from hundreds.
- Hundreds digit is 6 → becomes 5, tens become 12.
- 12 - 7 =
5
3.
Hundreds place: 5 - 3 =
2
✔ Result:
255
---
Problem 5:
```
832
- 556
-----
```
Step-by-step:
1.
Ones place: 2 - 6 → Can't do, borrow from tens.
- Tens digit is 3 → becomes 2, ones become 12.
- 12 - 6 =
6
2.
Tens place: 2 - 5 → Can't do, borrow from hundreds.
- Hundreds digit is 8 → becomes 7, tens become 12.
- 12 - 5 =
7
3.
Hundreds place: 7 - 5 =
2
✔ Result:
276
---
Problem 6:
```
726
- 447
-----
```
Step-by-step:
1.
Ones place: 6 - 7 → Can't do, borrow from tens.
- Tens digit is 2 → becomes 1, ones become 16.
- 16 - 7 =
9
2.
Tens place: 1 - 4 → Can't do, borrow from hundreds.
- Hundreds digit is 7 → becomes 6, tens become 11.
- 11 - 4 =
7
3.
Hundreds place: 6 - 4 =
2
✔ Result:
279
---
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| 1. 925 - 389 |
536 |
| 2. 842 - 478 |
364 |
| 3. 523 - 297 |
226 |
| 4. 634 - 379 |
255 |
| 5. 832 - 556 |
276 |
| 6. 726 - 447 |
279 |
You can now fill in the blanks in the worksheet with these results!
Parent Tip: Review the logic above to help your child master the concept of subtracting 3 digit numbers with regrouping worksheet.
