Unit #1 - Lesson 3: The Commutative and Associative Properties
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Commutative Property of Addition
Changing the order of the addends does not change the sum.
expression
A mathematical phrase that contains operations, numbers, and/or variables.
Commutative Property of Multiplication
Changing the order of the factors does not change the product.
Associative Property of Addition
Changing the grouping of three or more addends does not change the sum.
Associative Property of Multiplication
Changing the grouping of three or more factors does not change the product.
operations
addition, subtraction, multiplication, division
Order of Operations
the order in which operations in an expression to be evaluated are carried out. 1. parentheses 2. exponents 3. multiplication and division 4. addition and subtraction
