Different Types of Numbers
My math teacher was hungry but all she had was a piece of pi
Numbers to solve problems?
We use numbers to solve problems. A simple problem such as "If Ellen has 3 walls on which to watch the paint dry, and she watches 1 of them, how many walls are left to watch?" has a simple answer. As problems get more interesting, as surely they must, so do the numbers we need in order to solve them.
Real Numbers
All numbers that can be expressed as the limit of a sequence of rational numbers. Every real number corresponds to a point on the number line.
Here are some examples of Numbers
Natural Numbers
The counting numbers {1, 2, 3, ...}, are called natural numbers. They include all the counting numbers i.e. from 1 to infinity.
Whole Numbers
They are the natural numbers including zero. Not all whole numbers are natural numbers, but all natural numbers are whole numbers.
Integers
Positive and negative counting numbers, as well as zero.