Algebra 1 Types of Numbers

Rational Number

Any number that can be written as a fraction

Examples: 2/3, 7/8, 3/4, 6/7

Integers

All positive and negative whole numbers, and 0.

Examples: -3, -2, -1, 0, 1, 2, 3

Whole Numbers

All positive integers and zero but no negative numbers

Examples: 0,1,2,3,4,5

Natural Numbers

All positive integers, excluding 0. Also known as the basic counting numbers!

Examples: 1,2,3,4,5,6,7,8,9,10

Irrational Number

A real number that cannot be written as a simple fraction

Examples: Pi = 3.14159 or square root of 10.