In this lesson, students apply their understanding of addition and subtraction of fractions to solve multi-step problems. They work with fractions and mixed numbers and make estimates as well as finding the values of sums and differences. Students find the sums and the differences in ways that make sense to them. They will choose common denominators and also can use techniques they have seen in earlier lessons, such as adding on to make a whole number.

What strategies did most students use to add and subtract fractions today? Which strategies did you anticipate? Which did you not anticipate?