Chapter 1 Vocab

​1-1 Variable and Expressions Vocab

​Expression: Numbers, variables and operators grouped together that show the value of something.

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Variable: A letter representing an unknown number

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Term: Number, variable or the product / quotient of numbers and variables.

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​1-2 Order Of Operations

​Evaluate: Find the value of an expression

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​1-3 Properties of Numbers

​Substitution Property: A quantity may be substituted for its equal in an expression

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Commutative: The order in which you multiply or add numbers does not change the sum or product

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Associative: The way you group numbers when adding or multiplying does not change the sum or product.

​1-4 The Distributive Property

​Like Terms: Terms that contain the same variables with the same exponents.

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Simplest Form: Contains no like terms or parentheses.

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Coefficient: ​A number used to multiply a variable.

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​1-5 Equation

​Equation: A math sentence that contains an equal sign

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Solution: The replacement value that makes an equation true. ​