Exponents and Roots Practice

Find the square root(s)

 $-\sqrt{4}$  

Find the square root

 $\sqrt{\frac{16}{25}}$  

What is the cubed root of 64?

What is the cubed root of -216?

Evaluate the expression

 $3\sqrt{49}+5$  

Evaluate the expression

 $10-4\sqrt{16}$  

Evaluate the expression

 $\left(\sqrt{-27}\right)^2+61$  

The word "period" means the time it takes something to swing back and forth. It can be found using the formula below, where L stands for the length of whatever is swinging. T stands for time. If a swing is 4 feet long, how much time does it take to complete one swing?

 $T=1.1\sqrt{L}$  

• 5.1 seconds

• 4.4 seconds

• 3.1 seconds

• 2.2 seconds

Which expression is equivalent to the expression below?

 $2^42^3$  

•  $2^{12}$  

•  $4^7$  

• 48

• 128

Write the expression in exponential form

 $\left(-7\right)\left(-7\right)\left(-7\right)xxxxy$  

•  $-7^3x^3$  

•  $\left(-7\right)x^3y$  

•  $\left(-7\right)^3+x^3+y$  

•  $-7xy^4$