| A | B |
| least common multiple | The smallest common multiple of two or more numbers. |
| greatest common factor | The largest common factor of two or more numbers. |
| fraction | The notation used to represent the number of equal parts of a whole. |
| proper fraction | A fraction less than one. |
| mixed number | A number greater than one that has a whole number part and a fractional part. |
| improper fraction | A fraction greater than or equal to one. |
| equivalent fraction | Equal fractions with different denominators. |
| simplest form of a fraction | A fraction with no common factors in the numerator and the denominator. |
| reciprocal of a fraction | The fraction with the numerator and denominator interchanged. |