This Fluency Activity is a part of the Lesson 7, Unit 5, Grade 1. This fluency activity reviews how to use the Level 3 strategy of making ten to add two single-digit numbers. Assign partners of equal ability. Partners choose an addend for each other from 1 to 10. On their personal white boards, students add their number to 9, 8, and 7. Remind students to write the two addition sentences they learned in Module 2, as seen in the examples below.