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MIDDLE SCHOOL

Mathematics (Grade 6)

Expressions and Equations

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Expressions and Equations: Overview of Expressions and Equations

Associative Property (Addition)

Description

Associative Property (Addition)
Introduction

The associative property of addition states that when three or more numbers are added, the way they are grouped does not change the sum. This property is useful in algebra for regrouping...

Transcript

To make a mini class library, Tom brings 5 books. Alex brings 6 books. Sam brings 4 more books.

To find the total number of books, one method is to group the first two numbers in parentheses and add them first, then add the third number: the sum of 5 and 6 plus 4.

When 5 is added to 6, the result is 11. Then, adding the remaining 4...