Adding & Subtracting

https://goo.gl/go4xIB racing game (same denominator)

https://goo.gl/Eh5YOr game - matching up fractions = 1, with same denominator

https://goo.gl/1VN2F Adding and Subtracting Fractions Game - Math Play

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.