Rational and Irrational Numbers and Square and Cube Roots

The area of a square is 117 square meters. Which best represents the length of a side of the square? 

• 10.8 m

• 11 m

• 10 m

• 11.2 m

Evaluate
√36

• 6

• -9

• 18

• -18

Estimate √50. Round your answer to the nearest Whole Number. 

• 5

• 10

• 25

• 7

Evaluate √72. Round your answer to the nearest Whole Number. 

• 7.2

• 7

• 8

• 9

If I know the area of a square, how do I find the side length?

• I square the area.

• I divide the area by 2.

• I take the square root of the area.

• I divide the area by 4.

Which number(s) is a perfect square? Select any that apply.

• 14

• 38

• 25

• 101

Select all of the rational numbers.

Check all the are TRUE for perfect squares.

• Their square roots are always rational.

• Their square roots are always positive.

• Their square roots are always irrational.

• Their square roots are always even numbers.

What is the best classification for -4?

• irrational number, real number

• integer, rational number, real number

• whole number, integer, real number

• rational number, real number

Which of the following square roots is an irrational number?