Long Addition: 123 + 456
Quick Answer
123 + 456 = 579
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Step-by-step solution
Ones place value
3 + 6 = 9. Put the 9 in the Ones place.
| 1 | 2 | 3 | |
| + | 4 | 5 | 6 |
| 9 |
Tens place value
2 + 5 = 7. Put the 7 in the Tens place.
| 1 | 2 | 3 | |
| + | 4 | 5 | 6 |
| 7 | 9 |
Hundreds place value
1 + 4 = 5. Put the 5 in the Hundreds place.
| 1 | 2 | 3 | |
| + | 4 | 5 | 6 |
| 5 | 7 | 9 |
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