This file folder game can be used to help students add and subtract fractions with unlike denominators using grids. This skill is ideally taught prior then to adding and subtracting fractions with unlike denominators using the traditional algorithm.
Common Core Standards:
Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators.
Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers.