Fractions with sets

A fraction of a set is a whole fraction divided into smaller equal groups. A fraction is one whole thing divided into equal pieces

A denomenator is the bottom number which is showing the fraction size. The numerator is the top number which is showing how many pieces there are. 

5/8 is eight pieces and five are shaded. So the numerator is five and the denomenator is eight. 1/4 is four quarters and one is shaded. So the numerator is four and the denomenator is five.