Review

• Integer

• Rational

• Whole

• Natural

• Irrational

Which number below is best described as an irrational number?

•  $21^2$  
  

•  $\sqrt{88}$  

• 0

•  $\sqrt{\frac{9}{16}}$  

Irrational numbers are...

• counting numbers.

• negative whole numbers.

• decimals that end or repeat.

• decimals that don't end and don't repeat.

• counting numbers and zero.

Which 2 answers below would you use to correctly fill in the blanks to complete the scientific notation of 34,000,000?

________ x ________

• 3.4

• 34

• 10⁷

• 10^-7

• 10⁶

Which number below written in standard form, best represents 9.65 x 10^-5?

• 96,500,000

• 0.0000965

• 0.000096

• 0.00000965

If the exponent in scientific notation is a negative number...

• the number in standard form is bigger than 1.

• the number in standard form is smaller than 1.

In scientific notation, where do you always move the decimal?

• Behind the very first number.

• Behind the very last number.

• In front of all of the zeros.

• Behind all of the zeros.

Rational numbers are...

• counting numbers.

• negative whole numbers.

• decimals that end or repeat.

• decimals that don't end and don't repeat.

• counting numbers and zero.

Which 2 answers below would you use to correctly fill in the blanks to complete the scientific notation of 0.000431?

________ x ________

• 4.31

• 43.1

• 4.3

• 10^-4

• 10⁴

What kind of exponent would you use for the scientific notation of 0.000357?

• Positive

• Negative