Unit 1 Review: Real Numbers, Exponents, and Scientific Notation

Which fraction has a repeating decimal?

• $\frac{12}{36}$

• $\frac{32}{50}$

• $\frac{20}{40}$

• $\frac{24}{20}$

A square rug has an area of 324 square feet. How long is each side of the rug?

• 18 feet

• 32.4 feet

• 33 feet

• 24 feet

Whic is an estimate of  $\sqrt{20}$   to the nearest hundreth?

• 4.47

• 4.4

• 2.0

• 4.74

What is the value of  $5^{-4}$  ?

•  $\frac{1}{625}$  

•  $625$  

•  $-5555$  

•  $5555$  

Which statement is false?

• All whole numbers are integers.

• All irrational numbers are real.

• Some integers are irrational.

• Some integers are whole numbers.

Which of these is least likely to describe the distance above sea level?

• Whole Number

• Integer

• Rational Number

• Real Numbers

• Irrational Number

Which of the above are true?

• Only 1 and 2

• Only 2 and 3

• None of them

• All of them

Which number is between  $\frac{6}{37}$  and  $\sqrt{12}$  

•  $\frac{1}{15}$  

•  $\frac{10}{3}$  

•  $\sqrt{23}$  

•  $3+\pi$  

The population of a large U.S. city is 3,504,315. Which of the following best expresses the population?

•  $3.5\ \times10^6$  

•  $3.5\times10^7$  

•  $3.504\times10^6$  

•  $35.04\times10^6$  

 $\left(6.3\times10^7\right)-\left(3.2\times10^6\right)$  

What is the answer in scientific notation?

•  $3.1\times10^7$  

•  $3.1\times10^6$  

•  $5.98\times10^6$  

•  $5.98\times10^7$