| A | B |
|---|
| real number | The combined set of rational and irrational numbers. |
| fraction | A way of representing part of a whole or part of a group by telling the number of equal parts in the whole and the number of those parts you are describing. |
| numerator | The number or expression written above the line in a fraction. It tells the number of parts being described. |
| denominator | The quantity below the line in a fraction. It tells the number of qual parts into which a whole is divided. |
| rational number | A number that can be expressed as the ratio of two integers. |
| irrational numbers | Numbers that cannot be written as a ratio of two integers. The decimal extensions never terminate and never repeat. |
| natural numbers | Numbers that we use to count. Also called counting numbers. |
| whole numbers | The natural or counting numbers and zero. |
| integers | Counting numbers, their opposites, and zero. |
| ratio | a comparison of two numbers using division. |
