1. Section 1-2 Classifying Numbers and the Number Line

2. Natural Number Definition Counting Numbers Symbol N

3. Whole Number Definition The natural numbers and zero Symbol W

4. Integer Definition Whole numbers and their opposites Symbol Z

5. Rational Number Definition Any number that can be written as a fraction where Symbol Q

6. irRational Number Definition Non-repeating, non-terminating decimals – Can’t be written as a fraction Symbol I

7. Real Number Definition All of the above Symbol

8. Diagram These are all real numbers!