1. Number Systems

2. Number Systems a way of classifying different types of numbers
most numbers or sets of numbers can belong to several different sets of numbers at the same time
There are 6 different number systems

4. Real Symbol - R Includes - All numbers
Doesn’t Include - Imaginary numbers
Examples - 8, 15.2, 37/5, pi

5. Rational
Symbol - Q
Includes - All terminating and repeating decimals, can be written as fractions
Doesn’t Include - Non terminating, non repeating numbers
Example - 9, ⅚, 2.5, …

6. Irrational
Symbol - Q
Includes - All non terminating, non repeating decimals
Doesn’t Include - Terminating, repeating decimals
Example - Pi, √ 2

7. Integers Symbol - I Includes - All whole numbers, positive or negative
Doesn’t Include - Non whole numbers
Example - 2, 18, -6, 0

8. Whole Numbers Symbol - W
Includes - 0 and all the whole numbers above it
Doesn’t Include - Negatives or decimals
Example - 0,1,2,3,4

9. Natural Symbol - N Includes - All whole numbers above 0
Doesn’t Include - 0 and any number less, decimals
Example - 1,2,3,4,5

10. Examples Name all of the sets that the following numbers fit into 15
35/2 Pi
-0.6