square and cube roots

 $\sqrt{16}=?$  

• 8

• 2

• 4

• 32

 $9^2=18$  True or false?

• True

• False

 $3_{\sqrt{8}}$    (cube root of 8) 

• 2

•  $\pm2$  

• -2

• None of the above 

√121

• 12
• 10
• 11
• 3

What is a square?

• Something you multiply by the 3rd power
• A shape
• A number you multiply by itself

A perfect square is a number whose square root is ___________.

• Even

• Irrational

• Whole

• Odd

27 is a perfect cube

• true

• false

 $\sqrt{36}=$  

• 4

• 9

• 6

• 12

Cubing a number means multiplying a number by itself 3 times.

• True

• False

Determine which is perfect square?

• 54

• 36

• 21

• 43