Numbers are any characters that represent a numerical value.
Numbers are split into a few categories: Real Numbers, Rational Numbers, Irrational Numbers, Integers, Whole Numbers, and Natural Numbers.
Note that numbers can fall in more than one of the categories listed above.
Real Numbers Edit
A real number is any number that is finite and can be put on a number line.
Rational Numbers Edit
A rational number is any number that can be produced by dividing two numbers. In other words, any number that can be represented as a common fraction is a rational number.
Irrational Numbers Edit
As its name suggests, an irrational number is the opposite of a rational number. It cannot be represented as a common fraction. Irrational Numbers have decimal places that go on forever without repeating.
(i don't have time to edit, just start adding text for this heading, and add whole numbers and natural number sections)