Three-Digit Addition Practice
Practice adding three-digit numbers with and without regrouping.
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Three-Digit Addition Practice
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Read each question carefully and solve the addition problems. Show your work.
Add the following numbers. No regrouping is needed.
1. 234 + 123 =
2. 501 + 387 =
3. 615 + 204 =
Add the following numbers. You will need to regroup in the ones or tens place.
4. 145 + 237 =
5. 428 + 356 =
6. 719 + 162 =
Add the following numbers. You will need to regroup into the hundreds place.
7. 375 + 452 =
8. 581 + 230 =
9. 199 + 301 =
Complete the following addition problems by filling in the missing numbers.
10. 4__5 + 231 = 676
The missing digit is .
11. 18__ + 312 = 496
The missing digit is .
12. __05 + 123 = 728
The missing digit is .
Solve the following word problems. Show your work.
13. A library has 345 fiction books and 289 non-fiction books. How many books does the library have in total?
14. Sarah collected 178 stamps, and her friend Tom collected 256 stamps. How many stamps do they have altogether?
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