Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model.

Add fractions (sums up to 1)

Add Fractions (Sums up to 1)

Add fractions (sums greater than 1)

Add Fractions (Sums greater than 1)

Subtract fractions

Subtract Fractions