Unit 4, Lesson 20# Use math drawings to represent additions with up to two compositions and relate drawings to a written method

EngageNY 60 min(s)

In this lesson, students continue to apply their understanding of place-value strategies for addition as they move from concrete to pictorial as they use math drawings to represent compositions of 1 ten and 1 hundred. Students relate their drawings to the vertical form, recording each change they make to their model on the numerical representation. They use place-value language to explain these changes.