4.4 From Hundredths to Hundred-thousands · Lesson 19: Compose and Decompose to Add and SubtractLesson plan
Learning goals: Teacher Facing Add and subtract multi-digit numbers, with composing or decomposing, using the standard algorithm. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 4.4 From Hundredths to Hundred-thousands, Grade 4.