7th Grade Topic 2 Test Review

What kind of number is -3?

• rational
• irrational
• whole
• natural

What kind of number is   π   ?

• rational
• irrational
• whole
• integer

Is 3.74 a rational number?

• yes
• no

Is 3.74 a rational number?

• yes
• no

A REPEATING decimal is what type of number?

• Rational 
• Irrational

Irrational numbers...

• reduce to π

• never end and never repeat

• can sometimes be perfect squares

• must be negative

 $\sqrt{16}=?$  

• 8

• 2

• 4

• 32

 $9^2=18$  True or false?

• True

• False

 $-\sqrt{144}$  

• 12

• -12

• -72

• none of the above (imaginary number) 

 $\sqrt{-144}$  

• 12

• -12

• 72

• none of the above (imaginary number)