Let's solve each of the addition problems in the worksheet step by step. These are all
three-digit addition problems that may require
regrouping (carrying).
---
Problem 1: 546 + 436
```
546
+ 436
-----
```
-
Ones place: 6 + 6 = 12 → write down
2, carry over
1
-
Tens place: 4 + 3 = 7, plus carry-over 1 =
8
-
Hundreds place: 5 + 4 =
9
✔ Answer: 982
---
Problem 2: 438 + 522
```
438
+ 522
-----
```
-
Ones: 8 + 2 = 10 → write
0, carry
1
-
Tens: 3 + 2 = 5, plus 1 =
6
-
Hundreds: 4 + 5 =
9
✔ Answer: 960
---
Problem 3: 312 + 349
```
312
+ 349
-----
```
-
Ones: 2 + 9 = 11 → write
1, carry
1
-
Tens: 1 + 4 = 5, plus 1 =
6
-
Hundreds: 3 + 3 =
6
✔ Answer: 661
---
Problem 4: 724 + 137
```
724
+ 137
-----
```
-
Ones: 4 + 7 = 11 → write
1, carry
1
-
Tens: 2 + 3 = 5, plus 1 =
6
-
Hundreds: 7 + 1 =
8
✔ Answer: 861
---
Problem 5: 239 + 436
```
239
+ 436
-----
```
-
Ones: 9 + 6 = 15 → write
5, carry
1
-
Tens: 3 + 3 = 6, plus 1 =
7
-
Hundreds: 2 + 4 =
6
✔ Answer: 675
---
Problem 6: 523 + 267
```
523
+ 267
-----
```
-
Ones: 3 + 7 = 10 → write
0, carry
1
-
Tens: 2 + 6 = 8, plus 1 =
9
-
Hundreds: 5 + 2 =
7
✔ Answer: 790
---
Problem 7: 155 + 238
```
155
+ 238
-----
```
-
Ones: 5 + 8 = 13 → write
3, carry
1
-
Tens: 5 + 3 = 8, plus 1 =
9
-
Hundreds: 1 + 2 =
3
✔ Answer: 393
---
Problem 8: 447 + 327
```
447
+ 327
-----
```
-
Ones: 7 + 7 = 14 → write
4, carry
1
-
Tens: 4 + 2 = 6, plus 1 =
7
-
Hundreds: 4 + 3 =
7
✔ Answer: 774
---
Problem 9: 262 + 239
```
262
+ 239
-----
```
-
Ones: 2 + 9 = 11 → write
1, carry
1
-
Tens: 6 + 3 = 9, plus 1 =
10 → write
0, carry
1
-
Hundreds: 2 + 2 = 4, plus 1 =
5
✔ Answer: 501
---
✔ Final Answers:
| Problem | Sum |
|--------|-----|
| 546 + 436 |
982 |
| 438 + 522 |
960 |
| 312 + 349 |
661 |
| 724 + 137 |
861 |
| 239 + 436 |
675 |
| 523 + 267 |
790 |
| 155 + 238 |
393 |
| 447 + 327 |
774 |
| 262 + 239 |
501 |
---
🔍 Explanation:
Each problem involves adding two three-digit numbers. The key steps are:
1. Add digits from
right to left (ones → tens → hundreds).
2. If the sum in a column is
10 or more,
regroup (carry over) the extra digit to the next higher place.
3. Always check your work for accuracy.
This practice helps build strong foundational arithmetic skills and understanding of place value.
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 addition regrouping worksheets.
