This Fluency Activity is a part of the Lesson 8, Unit 2, Grade 2. This activity extends upon the make a ten strategy within the metric system in preparation for the Sprint. It also reinforces that 1 meter is composed of 100 centimeters. For every number of centimeters I say, you say the number needed to make a meter. If I say 70 centimeters, you say 30 centimeters.