Rahul has 47 marbles. He gives 18 marbles to his friend. How many marbles does Rahul have left?

Step-by-step solution

1. Write subtraction: $47-18$.
2. Subtract units: $7-8$ is not possible, borrow 1 from tens. Tens 4 becomes 3, units become 17.
3. Compute units: $17-8=9$.
4. Compute tens: $3-1=2$.
5. Result is $29$.

Concept tested: Subtraction with borrowing

Published 1 October 2026 · How this solution was prepared and checked