Unit 4 Vocabulary Summative

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Term

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a single part of an expression, separated by addition or subtraction symbols

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Like Terms

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terms whose variables and exponent power are the same

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Associative Property of Addition

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the grouping of numbers does not change the sum. For example, 8 + (2 + 3) = (8 + 2) + 3 = 13

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Commutative Property of Addition

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changing the order of addends does not change the sum. Here's an example: 4 + 2 = 2 + 4

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Variable

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A letter that represents an unknown number. Example: x, a, n, z

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Expression

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an expression which is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.)

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Coefficient

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any number or numerical value being multiplied to a variable.

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Constant

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something unchanging; a number that has a fixed value

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Algebraic Operation

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any mathematical operation such as addition, subtraction, multiplication, or division.

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Exponent

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the number that shows how many times a base is multiplied by itself.