| A | B |
|---|
| terminating decimal | every rational number that can be written as a terminating decimal or a repeating decimal |
| repeating decimal | has a block of one or more digits that repeat indefinitely |
| real numbers | a rational or irrational number |
| rational numbers | any number that can be expressed as a ratio of two integers |
| irrational numbers | any number that cannot be expressed as a ratio of two integers |
| square root | A number that is multiplied by itself to form a product |
| perfect square | has integers as its square root |
| principal square root | is the nonnegative square root of a number |
