Square Roots 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, √16 = 4 because 4 x 4 = 16.

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, ∛27 = 3 because 3 x 3 x 3 = 27.

Front

Solve for x: x² = 144

Back

x = ±12

Front

What is the principal square root of 25?

Back

The principal square root of 25 is 5.

Front

Solve for x: x² = 64

Back

x = ±8

Front

What is the value of ±√121?

Back

±11

Front

Solve for x: x² = 49

Back

x = ±7

Front

What is the value of -√100?

Back

-10

Front

Estimate √90.

Back

Approximately 9.5.

Front

What is the relationship between square roots and perfect squares?

Back

A perfect square is a number that has an integer as its square root. For example, 1, 4, 9, 16, and 25 are perfect squares.