Section 1
Model Multiplying Two Decimals Less Than One
Property
To multiply two decimals less than one, you can use a 10x10 grid to model the area of a rectangle. The product of the two decimals is represented by the overlapping shaded area.
In this Grade 5 Pengi Math lesson from Chapter 4, students learn how to multiply two decimals by modeling products on 10×10 area grids and decomposing each decimal into expanded form. They apply the partial products method to calculate exact values and use the area model to verify correct decimal placement in the final answer.
Section 1
Model Multiplying Two Decimals Less Than One
To multiply two decimals less than one, you can use a 10x10 grid to model the area of a rectangle. The product of the two decimals is represented by the overlapping shaded area.
Section 2
Solving Decimal Multiplication with Partial Products
To multiply two decimals using partial products, decompose each factor, multiply each part of the first factor by each part of the second, and sum the results. For decimals and :
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Section 1
Model Multiplying Two Decimals Less Than One
To multiply two decimals less than one, you can use a 10x10 grid to model the area of a rectangle. The product of the two decimals is represented by the overlapping shaded area.
Section 2
Solving Decimal Multiplication with Partial Products
To multiply two decimals using partial products, decompose each factor, multiply each part of the first factor by each part of the second, and sum the results. For decimals and :
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter