what is numerator

The numerator is the number written on the top of a fraction. It represents the number of parts taken out of the whole. For example, in the fraction 4/5, 4 is the numerator. The denominator is the number below the fraction bar, which represents the total number of equal parts of the whole. Fractions have two parts, a numerator, and a denominator. The numerator can be less than, equal to, or greater than the denominator.