Decompose a fraction or a mixed number into a sum of fractions with the same denominator (denominators limited to 2, 3, 4, 5, 6, 8, 10, 12, and 100), recording the decomposition by an equation. Justify decompositions (e.g., by using a visual fraction model).

Numbers and Operations—Fractions

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.

Solve problems involving fractions and whole numbers (straight computation or word problems).