common denominator | A number that is a multiple of all of the denominators in a group of fractions. |
least common denominator | (LCD) The least, or smallest, number that is a multiple of all the denominators in a group of fractions. |
least common multiple | (LCM) The least, or smallest, number that is a multiple of two or more numbers. |
like denominators | Denominators that are the same. |
unlike denominators | Denominators that are different from each other. For example the fractions and have different denominators, one denominator being 4 and the other denominator being 8. |