Square Roots, Cube Roots, and Square Root Estimation

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, √9 = 3 because 3 x 3 = 9.

Tags

CCSS.8.EE.A.2

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.

Tags

CCSS.8.EE.A.2

Front

What is the square root of 16?

Back

4

Tags

CCSS.8.EE.A.2

Front

What is the cube root of 64?

Back

4

Tags

CCSS.8.EE.A.2

Front

What is the cube root of 125?

Back

5

Tags

CCSS.8.EE.A.2

Front

Which of the following is a perfect square: 54, 36, 21, 43?

Back

36

Tags

CCSS.8.EE.A.2

Front

What is the square root of 196?

Back

14

Tags

CCSS.8.EE.A.2

Front

What is the value of ∛8?

Back

2

Tags

CCSS.8.EE.A.2

Front

How do you estimate the square root of a number?

Back

To estimate the square root, find two perfect squares between which the number lies. For example, to estimate √50, note that 49 (7²) and 64 (8²) are perfect squares, so √50 is between 7 and 8.

Tags

CCSS.8.NS.A.2

Front

What is the relationship between squares and square roots?

Back

The square root of a number is the inverse operation of squaring that number. If x² = y, then √y = x.

Tags

CCSS.8.EE.A.2