Classifying Real Numbers and Squares and Square Roots

Which of the following is a perfect square?

• 39

• 6

• 50

• 81

Evaluate 8²

• 68

• 64

• 16

• 56

Which of the following is NOT a perfect square?

• 49

• 64

• 200

• 100

Evaluate 15²

• 196

• 256

• 225

• 289

Which of the following is NOT a perfect square?

• 9

• 25

• 16

• 10

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

• I square the area.

• I take the square root of the area.

• I divide the area by 2.

• I divide the area by 4.

Evaluate √361

• 16

• 17

• 18

• 19

The area of a square is 36 cm². What is the length of one side?

• 3 cm

• 6 cm

• 9 cm

• 24 cm

\(\sqrt{x\ }=\ 12\)

This means you are looking for the value of x that when square rooted will get you 12!

• x = 24

• x = 121

• x = 12

• x = 144

Evaluate √289

• 14

• 15

• 16

• 17