Form 1 Chapter 3 Square, Square Root, Cubes, Cubes Root

Determine which is perfect square?

• 54

• 36

• 21

• 43

 $9^2=18$  True or false?

• True

• False

 $\sqrt{-144}$  

• 12

• -12

• 72

• none of the above (imaginary number)

Choose which is perfect square?

(Have 2 answers)

• 514

• 225

• 908

• 576

 $32^2-13^2$  

• 855

• 456

• 988

• 856

 $\left(-\frac{5}{6}\right)^3$ 

•  $\frac{25}{36}$  

•  $\frac{125}{216}$  

•  $-\frac{36}{25}$  

•  $\frac{36}{25}$  

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

•  $=7$  

•  $\approx7$  

•  $\ne7$  

•  $\cong7$  

Which of the following is irrational?

• $\sqrt{49}$

• $\sqrt{50}$

• $\sqrt{81}$

• $\sqrt{121}$

 $^3\sqrt{64}=$  

• -8

• 8

• 16

• 4

 $^3\sqrt{-64}=$  

• -8

• 8

• -4

• 4