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

##### 1 Answer

Aug 15, 2016

#### Answer:

#### Explanation:

Define your number first.

Let the number be

The cube of a number is

Now we are finding a fraction of the cube of the number:

"Half of the cube" would be

"Two thirds of the cube" would be

"Two fifths of the cube" is