Math 8 Midterm Review- Lipscomb

Order the numbers below from least to greatest.  
 $\pi$           7        $\sqrt{39}$           $4\sqrt{5}\$  

•  $\pi\ ,\ \ \sqrt{39},\ \ 7,\ \ \ 4\sqrt{5}$  

•    $\pi,\ \ \sqrt{39},\ \ 4\sqrt{5},\ \ 7$  

•   $\sqrt{39},\ \ 7,\ \ 4\sqrt{5},\ \ \ \pi$  

•   $7,\ 4\sqrt{5},\ \ \pi,\ \ \sqrt{39}$  

Which number is irrational?

• 1.6739

Which number is rational?

• $\pi$

• $\sqrt{5}$

• -9

• $2\sqrt{6}$

Which number is an integer?

• $\sqrt{16}$

• $\sqrt{27}$

• $-\sqrt{10}$

• $\sqrt{117}$

Which number is between 14 and 15?

•  $\sqrt{200}$  

•  $\sqrt{190}$  

•  $\sqrt{100}$  

•  $\sqrt{228}$  

True or False: 

• True 
• False

Simplify the expression.

• 7⁶
• 7^-5
• 1/7⁵
• 7⁵

Anything raised to a power of zero is always: 

• 0
• 1
• itself
• negative

According to exponent rules, when we raise the power to a power we _______ the exponents.
Example: (d²)⁵

• add
• subtract
• multiply
• divide

According to exponent rules, when we multiply two power with the same base we _______ the exponents.
Example: c⁶ ⋅ c⁴

• add
• subtract
• multiply
• divide