Squares, Square Roots, Cubes, and Cube Roots

Determine which is perfect square?

• 54

• 36

• 21

• 43

determine which is square root of 144

• 11

• 10

• 12

• 14

estimate a square root of a number $\sqrt{54}$  

•  $=7$  

•  $\approx7$  

•  $\ne7$  

•  $\cong7$  

 $\sqrt{16}=?$  

• 8

• 2

• 4

• 32

 $9^2=18$  True or false?

• True

• False

 $\sqrt{-144}$  

• 12

• -12

• 72

• none of the above (imaginary number)

 $3_{\sqrt{8}}$    (cube root of 8) 

• 2

•  $\pm2$  

• -2

• None of the above 

 $3_{\sqrt{-1}}$  (cube root of -1)

•  $\pm1$  

• 1

• -1

• none of the above (imaginary number)

The area of a square painting is 81  $cm^2$  . What is the length of one side?

• 9

• -9

• 40.5

• -40.5

 $-6^2$  = ? 

• 36

• -36

• 12

• -12