This Problem Set is a part of the Lesson 11, Unit 7, Grade 2. In this lesson, students learn how to make change from $1 using counting on, simplifying strategies, and the relationship between addition and subtraction. They represent the part-whole relationship using a number bond and by writing a number sentence, often using the related addition to solve (e.g., $1 - 45 cents = ___ or 45 cents + ___ = 100 cents).