| A | B |
| reciprocal | Two numbers that have a product of 1. A fraction turned upside down. |
| quotient | The result of the division of one quantity by another. |
| product | The result of multiplication. |
| positive number | Numbers that are greater than zero. |
| 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. |
| denominator | The quantity below the line in a fraction. It tells the number of qual parts into which a whole is divided. |
| decimal | A number containing a decimal point. |
| decimal point | A dot separating the ones and tenths places in a decimal number. |
| divisor | The quantity by which another quantity is to be divided. |
| dividend | A quantity to be divided. |
| rational number | A number that can be expressed as the ratio of two integers. |
| irrational number | Numbers that cannot be written as a ratio of two integers. The decimal extensions never terminate and never repeat. |