Exploring the Real Number System

Which set of numbers is also known as counting numbers?

• Integers

• Natural numbers

• Rational numbers

• Whole numbers

What is the symbol for natural numbers?

• Q

• Z

• W

• N

Which number is included in whole numbers but not in natural numbers?

• -1

• 1

• 2

• 0

What is the symbol for whole numbers?

• Q

• N

• W

• Z

Which of the following is NOT an integer?

• 3

• 0

• -2

• 0.5

What is the symbol for integers?

• Z

• N

• W

• Q

Which of the following can be expressed as a fraction?

• e

• π

• √2

• 0.5

What is the symbol for rational numbers?

• N

• W

• Q

• Z

Which of the following is an example of an irrational number?

• 1/2

• 3

• π

• 0.75

Which of the following is true about irrational numbers?

• They are non-terminating and non-repeating decimals

• They include whole numbers

• They can be written as fractions

• They include negative integers