# The Real Number System

### Rational? Irrational?

## Rational Numbers

Rational numbers are numbers that are predictable. Whether they are repeating or not, any number that can be written as a fraction is rational.

Whole numbers are rational, they are numbers such as 130, 12, 40, etc..

Integers are whole numbers and their opposites, such as 40, -40, 30, -30, etc.

Natural numbers are the smallest classification of rational numbers, they are numbers that you could count such as 1,2,3 and so on..

Whole numbers are rational, they are numbers such as 130, 12, 40, etc..

Integers are whole numbers and their opposites, such as 40, -40, 30, -30, etc.

Natural numbers are the smallest classification of rational numbers, they are numbers that you could count such as 1,2,3 and so on..