Unit 1, Lesson 10# Subtract decimals using place value strategies and relate those strategies to a written method.

EngageNY 60 min(s)

In this lesson, students begin to model subtraction of decimals. They first model subtraction of decimals using place value chips and charts. For example, students model 7 ones 5 thousandths - 2 ones 3 thousandths. Then they make connections between the concrete representation and the vertical written method. Finally, students model subtraction of decimals written in a mixed format, 9.2 - 6 ones 4 tenths.