# How to write an expression for two-fifths of the cube of a number?

Aug 15, 2016

$\frac{2}{5} \times {x}^{3}$

#### Explanation:

Let the number be $x$
The cube of a number is ${x}^{3}$
"Half of the cube" would be $\frac{1}{2} \times {x}^{3}$
"Two thirds of the cube" would be $\frac{2}{3} \times {x}^{3}$
"Two fifths of the cube" is $\frac{2}{5} \times {x}^{3}$