Question

A bookshelf has 5 shelves. Each shelf has $30$ books. How many books are there in the bookshelf?

Answer 1

Number of shelves in a bookshelf $=5$
Number of books on one shelf $=30$

Number of books on 5 shelves = Number of books on one shelf $\times$ Number of shelves
$\Rightarrow$ Total number of books $=30\times 5$

Let’s solve this using place value rods.


Total number of books $=30\times 5=150$
The bookshelf has $150$ books.

Hence, option A is correct.