Add and subtract mixed numbers with like denominators by replacing each mixed number with an equivalent fraction, and/or by using properties of addition and the relationship between addition and subtraction.

Number and Operations-Fractions

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers (limited to denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100).

Understand a fraction 𝑎/𝑏 with 𝑎 > 1 as a sum of unit fractions (1/𝑏).