Square and Cube Roots

Front

What is a square root?

Back

A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 36 is 6 because 6 x 6 = 36.

Front

What is a cube root?

Back

A cube root of a number is a value that, when multiplied by itself three times, gives the original number. For example, the cube root of 27 is 3 because 3 x 3 x 3 = 27.

Front

Evaluate: √100

Back

10

Front

Evaluate: √25

Back

5

Front

Evaluate: √49

Back

7

Front

What are the square roots of 16?

Back

4 and -4

Front

Evaluate: √144

Back

12

Front

What is the square root of a negative number?

Back

The square root of a negative number is not a real number; it is an imaginary number. For example, √-1 is represented as 'i'.

Front

Evaluate: √(x^2) where x is a positive number.

Back

x

Front

Evaluate: ³√8

Back

2