Question

Find the value of 18$\times 5$. Is the product a whole number?

Answer 1

18$\times 5$
= (10 + 8 ) $\times 5$
=10$\times 5$ + 8$\times 5$
=50 +40
=90

According to the closure property of multiplication of whole numbers, product of two whole numbers is also a whole numbers. So the product, 90 as you know is a whole number.