When adding 129 and 68, how many carries occur during the addition?

Step-by-step solution

1. Add the units: $9+8=17$ → carry $1$ to the tens column.
2. Add the tens: $2+6+1=9$ → no carry.
3. Add the hundreds: $1+0=1$ → no carry.
4. Only one carry occurred.
5. Answer: One carry.

Concept tested: Counting carries in addition

Published 10 October 2026 · How this solution was prepared and checked