review for scientific notation and exponent rules

What is the value of

 $7^0$  ?

• 0

• 1

• undefined

•  $\frac{1}{7}$  

Which expression is equivalent to

 $5^7\times5^{-4}$  

•  $5^{11}$  

•  $5^{-28}$  

•  $5^3$  

•  $5^{-3}$  

For the expression

 $3^4$  

• 3 is the base and 4 is the exponent

• 3 is the exponent and 4 is the base

• 3 is the power and 4 is the exponent

• 3 is the exponent and 4 is the power

Which expression is equivalent to

 $5^{-7}$  ?

•  $\frac{1}{\left(-5\right)^{-7}}$  

•  $\frac{1}{5^7}$  

•  $\left(-5\right)^{-7}$  

•  $\frac{1}{5^{-7}}$  

Simplify

 $6\ \times m\ \times c\times c\times6\times m\ \times6\times c\times c\times c$  

•  $6m^2c^5$  

•  $18m^2c^5$  

•  $216m^2c^5$  

•  $6mc^7$  

Which one of the following numbers is not written in scientific notation?

• $5\times10^2$

• $2.1\times10^4$

• $3.2\times10^3$

• $0.1\ \times10^3$

Which number represents 4.5 x 10⁹?

• 45,000,000,000

• 4,500,000,000

• 450,000,000

• 0.0000000045

Aaliyah wrote the number 2.34 x10^-3 in standard form. Which number did she write?

• 0.00234

• 0.0234

• 0.234

• 2340

The average diameter of a red blood cell is 0.000007 m. Write this measurement in scientific notation.

• 0.7 x 10^-5

• 7 x 10^-6

• 7 x 10^-5

• 0.7 x 10⁵

Which expression is equivalent to (3.5 x 10²) + (7.0 x 10³) and written in scientific notation.

• 1.05 x 10³

• 2.7 x 10⁶

• 7.35 x 10³

• 10.5 x 10²