Question

Yoko says that when you divide 75 by 5, the answer is 15. How can you check her answer? is she correct?

Answer 1

Dividing by 5

Two methods...

1

How can we divide easily by 5?

We know

$5=\frac{10}{2}$

Then

$\frac{75}{5}=\frac{75}{\frac{10}{2}}=\frac{75\cdot2}{10}=\frac{150}{10}=15$2

The common method