Sonal has 123 marbles. She gives 56 marbles to her friend. How many marbles does she have left?

Step-by-step solution

1. Subtract units: $3$ needs to be subtracted by $6$. Borrow $1$ from tens.
2. Tens digit becomes $1$, units become $13$. $13-6=7$.
3. Subtract tens: $1$ is subtracted by $5$ after borrowing $1$ from hundreds, giving $11-5=6$.
4. Hundreds digit $1$ minus $0$ is $1$. Combine to get $67$.

Concept tested: Subtraction with borrowing

Published 7 October 2026 · How this solution was prepared and checked