Cube Roots

## Cube Roots

To find a cube root of a number, find a number which, when three versions of itself are multiplied together, gives you the original number. Finding a cube root is the inverse (opposite) operation to cubing a number.

The symbol used to show a cube root is , which is a square root sign but with a small 3 preceding it.

root(3)27 = 3, as three multiplied by itself three times gives 27.

A cube root of a negative number gives a negative answer: root(3)-8 = -2, as -2 x -2 x -2 = -8.

## Example 1

root(3)1000

10 x 10 x 10 = 1000

Calculate root(3)0.008