Exponents & Scientific Notation

Which expression is equal to  $4^2\times4^{-5}$  ?

•  $4^{-10}$  

•  $16^{-7}$  

•  $4^3$  

•  $4^{-3}$  

Select all expressions that are equivalent to $10^{-8}$   .

•  $\left(10^2\right)^{-4}$  

•  $\frac{1}{10^8}$  

•  $10^8$  

•  $10^{-4\ }$   $\times10^{-4}$  

Select all that apply: Evaluate - $\left(3^3\right)^6$   

•  $3^9$  

•  $3^{18}$  

•  $27^6$  

•  $9^6$  

The population in Washington, DC is approximately 711,571 people. Write this number in scientific notation.

• $711.571\times10^3$

• $7.11\times10^5$

• $7.11571\times10^5$

• 7.11

Solve: $\left(5\times10^2\right)\times\left(3\times10^{-3}\right)$   

•  $15\times10^{-1}$  

•  $8\times10^2$  

•  $15\times10^1$  

•  $8\times10^{-1}$  

Solve: $\frac{\left(7.4\times10^{10}\right)}{\left(4\times10^6\right)}$  

•  $3.4\times10^4$  

•  $1.85\times10^4$  

•  $3.4\times10^{16}$  

•  $1.85\times10^{16}$  

Solve: $\left(4.5\times10^4\right)+\left(3.6\times10^4\right)$   

•  $8.1\times10^4$  

•  $8.1\times10^8$  

•  $16.2\times10^4$  

•  $16.2\times10^{16}$  

What is the value of x: $2^x=64$   

• X = 32

• X = 6

• X = 5

• X = -6

Evaluate:  $X^0\times3\ =\ ?$  

• 1

• 3

• 0

How many times larger is $2.56\times10^3$ Than  $5.12\times10^2$  ?

• Twice as large

• Three times as large

• 5 times larger