Next - Grade 2 Mathematics Module 3, Topic G, Lesson 20. Grade 2 Mathematics Module 3, Topic G, Lesson 19. Objective: Model and use language to tell about 1 more and 1 less, 10 more and 10 less, and 100 more and 100 less. Like (203) Downloadable Resources. Resources may contain links to sites external to the EngageNY.org website. These sites may not be within the jurisdiction of NYSED and in.