Question

Find the value of :

Answer 1

Answer:

Step-by-step explanation:

To find one fifth of a number we divide the number by five. Then, to find four fifths of a number, we first find one fifth of that number and then multiply this by four.

                                                     or

Answer 2

Answer: 12.5 cm or 125 mm

Explanation:

Given: $\frac{5}{8}\ of\:20$

$\frac{5}{8}\cdot \:20$

$\frac{5\cdot \:20}{8\cdot \:1}$

$\frac{100}{8}$

$\frac{50}{4}$

$\frac{25}{2}$

$12.5 cm$

Conversion:

1 cm --> 10 mm

12.5 cm --> ( 12.5 * 10 ) mm

12.5 cm --> 125 mm