Math 8 Unit 2 Test Review

 $\sqrt{400}$  Evaluate:

• 100

• 200

• 20

• 4

 $\sqrt{46}$  Evaluate:

•  $\approx6.8$  

•  $\approx3.4$  

•  $\approx6.7$  

• 23

What is the side length of a square whose area is 16 square feet?

• 2

• 4

• 8

• 32

 $x^3=27$  Solve the equation:

• 3

• 6

• 5.1

• 9

What is the perimeter of a square with an area of 144?

• 12

• 36

• 48

• 144

 $\left(5^2\times5^4\right)^3$  Simplify the expression:

•  $5^{24}$  

•  $5^9$  

•  $5^{18}$  

•  $5^6$  

 $\frac{\left(7\times7^3\right)^4}{\left(7^2\right)^5}$  Simplify the expression:

•  $7^2$  

•  $7^5$  

•  $7^0$  

•  $7^6$  

Which of the following are equivalent to  $8^{-10}$  ?

•  $8^{10}$  

•  $\frac{1}{8^{10}}$  

•  $\frac{8^{20}}{8^2}$  

•  $\frac{8^4}{8^{14}}$  

Which of the following are equivalent to $7^0$  ?

•  $1$  

• 0

•  $\frac{7^5}{7^5}$  
  

Using exponents, simplify the following expression:

5⁵ * 5^-3

• 5^-15

• 5⁸

• 5^-8

• 5²