What fraction is shaded?
Remember that fractions represent the part out of the whole. In the case of this circle, that would represent the shaded pieces on top and the total pieces on the bottom. We have one shaded piece. And how many pieces total? Our one shaded piece and then two, three, four, five total pieces. Five goes on the bottom. Five is the denominator of this fraction.
Here’s our fraction, one-fifth. If we wanted to write this fraction in words, we would write the word “one” and then a hyphen and then the word “fifth,” one-fifth. What fraction of this circle is shaded? One-fifth.