This Fluency Activity is a part of the Lesson 13, Unit 8, Grade 2. This fluency activity reviews using place value understanding to rename units in preparation for subtraction with chips and the algorithm during Fluency Practice in Lessons 14, 15, and 16. I'm going to give you a number of hundreds and tens. I want you to rename 1 of the hundreds for 10 tens and then tell me how many hundreds and tens.