Column Addition: 402 + 12
Addition with Regrouping Calculator
What is 402 + 12?
Answer
402 + 12 =
414
No regrouping: each column is added on its own
| 4 | 0 | 2 | |
| + | 1 | 2 | |
| 4 | 1 | 4 |
Column by column: 402 + 12
- Ones: 2 + 2 = 4 — write 4.
- Tens: 0 + 1 = 1 — write 1.
- Hundreds: nothing to add — write 4.
402 + 12 = 414
Second check: 414 − 402 = 12
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