World #1: Real Numbers

What is an example of an irrational number?

• -2/3

• .75575557654..

• 23

• 0

A decimal that stops is which type of number? Example: 2.75

• Rational

• Irrational

What type of number is √2?

• Rational

• Irrational

• Integer

• Imaginary

Which best describes an irrational number?

• Any number that can be expressed as a fraction.

• A positive or negative whole number.

• A number that is a non-terminating, non-repeating decimal.

• The square root of any whole number.

Which list shows the numbers below in order from least to greatest?

 $\frac{1}{8}$  , 12%, 0.13,  $\frac{128}{1000}$  

• 0.13,  $\frac{128}{1000}$ , 12%,  $\frac{1}{8}$  

• 12%,  $\frac{1}{8}$ ,  $\frac{128}{1000}$ , 0.13

•  $\frac{128}{1000}$ ,  0.13, 12%,  $\frac{1}{8}$  

• 0.13,  $\frac{128}{1000}$ ,  $\frac{1}{8}$  , 12%

Check all real number subsets the number -825 belongs to.

• Natural

• Whole

• Integers

• Rational

• Irrational

 

Which list shows the numbers below in order from greatest to least?
0.07,  $\frac{1}{5}$ , 9%, 0.08, 0.083

•  $\frac{1}{5}$ , 9%, 0.083, 0.08, 0.07

• 9%, 0.083, 0.08, 0.07,  $\frac{1}{5}$  

• 0.07, 0.08, 0.083, 9%,  $\frac{1}{5}$  

• 9%,  $\frac{1}{5}$ , 0.08, 0.083, 0.07

Which real number subsets does the number  $\sqrt{47}$  belong to? (Check all that apply)

• Irrational

• Rational

• Integers

• Whole

• Natural

Which of the following is NOT a true statement?

• 47 < 74

• 20% = $\frac{1}{5}$

• 1.43 > 0.4

• $\frac{3}{4}$ < $\frac{1}{2}$

In Australia, the people use approximately 2,240,000,000 pounds of bread in a year. How can we write this number in scientific notation?

• 2.240 x 10^-9

• 224 x 10⁶

• 2.2 x 10⁶

• 2.240 x 10⁹