Square Roots, Cube Roots, and Square Root Estimation

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the square of an integer. For example, 1, 4, 9, 16 are perfect squares.

Front

What is a perfect cube?

Back

A perfect cube is a number that can be expressed as the cube of an integer. For example, 1, 8, 27, 64 are perfect cubes.

Front

What is the square root of a number?

Back

The square root of a number is a value that, when multiplied by itself, gives the original number. For example, √9 = 3 because 3 x 3 = 9.

Front

What is the cube root of a number?

Back

The 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

Between which two whole numbers does √50 fall?

Back

√50 falls between 7 and 8.

Front

Estimate √20 to the nearest whole number.

Back

√20 is approximately 4.47, so it is estimated to be 4.

Front

What is the cube root of 64?

Back

The cube root of 64 is 4.

Front

How do you determine if a number is a perfect square?

Back

A number is a perfect square if its square root is an integer.

Front

How do you determine if a number is a perfect cube?

Back

A number is a perfect cube if its cube root is an integer.

Front

What is the value of √81?

Back

The value of √81 is 9.