Grade 3 · Number and Operations—Fractions

CCSS.MATH.CONTENT.3.NF.A.1

Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.

Read this standard on the official Common Core site

Lessons that teach this standard

• What Is a Fraction? Equal Parts of a Whole

  What the top and bottom numbers mean, why the parts must be equal, how a fraction is built from copies of a unit fraction, and when a fraction equals a whole number.