This Problem Set is part of the the Lesson 21, Unit 5, Grade 5. For any problem, did you draw a tape diagram to help solve the problems? What does it look like? For #1 and #2, there are different ways to solve the problems. Share and compare your strategy with a partner. How did you solve #3a and b? What operations did you use to solve? When did you know which operation to use? Compare and contrast #5 and #6. How did you solve #7? How did you know which operation to use when?