Develop understanding of fractions as numbers.
Understand a fraction as a number on the number line; represent fractions on a number line diagram. (3.NF.2)
b. Represent a fraction a /b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line. (3.NF.2b)
More information and the complete College and Career Readiness Standards can be found here.