This Power Point can used to teach an entire unit on adding and subtracting fractions. I used it each day to drive my instruction on 5.NF.1 and 5.NF.2. It is divided into sections that include estimating fractions, adding fractions, subtracting fractions, adding mixed numbers, subtracting mixed numbers, and mixed review. As I taught the unit, I would often review with previous slides. These problems require students to not only make the fraction computation but display their deep understanding of fraction concepts. This can also be printed and used to review at the end of the unit.