| A | B |
| {0, 1, 2, 3,……} | whole numbers |
| {1, 2, 3, ….} | natural or counting numbers |
| {….-2, -2, 0, 1, 2,….} | integers |
| any number that can be written as a fraction | rational numbers |
| non-repeating, non-terminating decimals | irrational numbers |
| all the numbers on a number line | real numbers |
|