| A | B |
|---|
| benchmark | a number that's easy to work with, used in estimating |
| numerator | the top number in a fraction |
| denominator | the bottom number in a fraction |
| equivalent fractions | fractions that are equal |
| LCM-least common multiple | used to find the common denominator |
| LCD-lowest common denominator | you have to find this to add fractions with different denominators |
| GCF-greatest common factor | used to simplify or "reduce" fractions |
| improper fraction | a fraction in which the numerator is greater than the denominator; a fraction greater than one whole unit |
| proper fraction | a fraction in which the numerator is less than the denominator |
| mixed number | a number consisting of both a whole unit number and a fraction |
| inverse operation | the opposite |
