| Term | Definition |
| Rational Number | Any number that can be expressed as a ratio of two integers. |
| Equivalent Fractions | Fractions that name the same amount or part. |
| Improper Fraction | A fraction in which the numerator is greater than or equal to the denominator. |
| Mixed Number | A number made up of a whole number that is not zero and a fraction. |
| Simplify | To write fraction or expression in simplest form. |
| Repeating Decimal | A decimal in which one or more digits repeat infinitely. |
| Terminating Decimal | A decimal number that ends. |
| Ratio | A comparison of two quantities by division. |
| Rate | A ratio that compares two quantities measured in different units. |
| Proportion | An equation that states that two ratios are equivalent. |
| Unit Rate | A rate in which the second quantity in the comparison is one unit. |
| Percent Proportion | is/of = __%/100% |
| Equivalency | Having the same value. |
| Numerator | The top number of a fraction that tells how many parts of a whole are being considered. |
| Denominator | The bottom number of a fraction that tells how many equal parts are in the whole. |
| Fraction | A part over the whole. |