This Problem Set is a part of the Lesson 12, Unit 2, Grade 1. In this lesson, students solve word problems that invite them to use the "take from ten" subtraction strategy. For example, in solving the problem "When Claudia brought home her 17 apples, she put 10 in a bowl and 7 on the table. Then, she decided to give 9 apples to her babysitter.
