This Fluency Activity is a part of the Lesson 31, Unit 4, Grade K. During Topic F and for the remainder of the module, each topic includes an opportunity for review and mastery of the sums and differences with totals through 5 by means of the Core Fluency Sprints. Four Sprints are provided in this lesson, with Sprint A being the most simple addition fluency of the grade and Sprint D being the most complex (including addition and subtraction). Select the Sprint that is most appropriate for the class. To correct the work as a class, all students should take the same Sprint.