Section 1
Decomposing Decimals into Expanded Form
Property
To write a decimal in expanded form, you express it as the sum of the values of each digit. This process is called decomposition.
In this Grade 5 lesson from enVision Mathematics Chapter 4, students learn to multiply two decimals using the partial products method, applying their understanding of place value and area models to break multiplication problems into smaller parts. Students practice estimating products first, then use area models to organize partial products before finding the final answer. The lesson connects decimal multiplication to strategies students already know from multiplying whole numbers.
Section 1
Decomposing Decimals into Expanded Form
To write a decimal in expanded form, you express it as the sum of the values of each digit. This process is called decomposition.
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
Decomposing Decimals into Expanded Form
To write a decimal in expanded form, you express it as the sum of the values of each digit. This process is called decomposition.
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