Unit 1, Lesson 9, Grade 5 icon
Unit 1, Lesson 9

Add decimals using place value strategies and relate those strategies to a written method.

EngageNY 60 min(s)

In this lesson, students begin to model addition of decimals. They first model addition of decimals using place value chips and charts. For example, students model the addition of 2 tenths + 6 tenths, 2 ones 3 thousandths + 6 ones 1 thousandth, and 2 tenths 5 thousandths + 6 hundredths. Then they make connections between the concrete representation and the vertical written method. Finally, students model addition of decimals by drawing place value disks on a place value chart.

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