Let's solve each subtraction problem with regrouping (also known as borrowing). We'll go step by step for each one.
---
1. 892 - 649
```
892
- 649
-----
```
Start from the right:
-
Ones place: 2 - 9 → can't do, so borrow from tens.
- Tens digit is 9 → becomes 8, ones become 12.
- 12 - 9 = 3
-
Tens place: 8 (after borrowing) - 4 = 4
-
Hundreds place: 8 - 6 = 2
✔ Answer: 243
---
2. 630 - 213
```
630
- 213
-----
```
-
Ones place: 0 - 3 → can't do, borrow from tens.
- Tens digit is 3 → becomes 2, ones become 10.
- 10 - 3 = 7
-
Tens place: 2 (after borrowing) - 1 = 1
-
Hundreds place: 6 - 2 = 4
✔ Answer: 417
---
3. 421 - 304
```
421
- 304
-----
```
-
Ones place: 1 - 4 → can't do, borrow from tens.
- Tens digit is 2 → becomes 1, ones become 11.
- 11 - 4 = 7
-
Tens place: 1 (after borrowing) - 0 = 1
-
Hundreds place: 4 - 3 = 1
✔ Answer: 117
---
4. 832 - 649
```
832
- 649
-----
```
-
Ones place: 2 - 9 → borrow from tens.
- Tens digit is 3 → becomes 2, ones become 12.
- 12 - 9 = 3
-
Tens place: 2 (after borrowing) - 4 → can't do, borrow from hundreds.
- Hundreds digit is 8 → becomes 7, tens become 12.
- 12 - 4 = 8
-
Hundreds place: 7 - 6 = 1
✔ Answer: 183
---
5. 420 - 233
```
420
- 233
-----
```
-
Ones place: 0 - 3 → borrow from tens.
- Tens digit is 2 → becomes 1, ones become 10.
- 10 - 3 = 7
-
Tens place: 1 (after borrowing) - 3 → can't do, borrow from hundreds.
- Hundreds digit is 4 → becomes 3, tens become 11.
- 11 - 3 = 8
-
Hundreds place: 3 - 2 = 1
✔ Answer: 187
---
6. 521 - 364
```
521
- 364
-----
```
-
Ones place: 1 - 4 → borrow from tens.
- Tens digit is 2 → becomes 1, ones become 11.
- 11 - 4 = 7
-
Tens place: 1 (after borrowing) - 6 → can't do, borrow from hundreds.
- Hundreds digit is 5 → becomes 4, tens become 11.
- 11 - 6 = 5
-
Hundreds place: 4 - 3 = 1
✔ Answer: 157
---
7. 701 - 569
```
701
- 569
-----
```
-
Ones place: 1 - 9 → borrow from tens.
- Tens digit is 0 → can't borrow directly, so go to hundreds.
- Hundreds digit is 7 → becomes 6, tens become 10.
- Now borrow from tens: tens become 9, ones become 11.
- 11 - 9 = 2
-
Tens place: 9 (after borrowing) - 6 = 3
-
Hundreds place: 6 - 5 = 1
✔ Answer: 132
---
8. 630 - 113
```
630
- 113
-----
```
-
Ones place: 0 - 3 → borrow from tens.
- Tens digit is 3 → becomes 2, ones become 10.
- 10 - 3 = 7
-
Tens place: 2 - 1 = 1
-
Hundreds place: 6 - 1 = 5
✔ Answer: 517
---
9. 410 - 304
```
410
- 304
-----
```
-
Ones place: 0 - 4 → borrow from tens.
- Tens digit is 1 → becomes 0, ones become 10.
- 10 - 4 = 6
-
Tens place: 0 - 0 = 0
-
Hundreds place: 4 - 3 = 1
✔ Answer: 106
---
✔ Final Answers:
1.
243
2.
417
3.
117
4.
183
5.
187
6.
157
7.
132
8.
517
9.
106
Let me know if you'd like these shown in a formatted worksheet!
Parent Tip: Review the logic above to help your child master the concept of subtraction with regrouping worksheet three digit numbers.
