1-3 Variables and Expressions Objectives: - Evaluate expressions containing variables - Translate verbal phrases into algebraic expressions.

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Presentation transcript:

1-3 Variables and Expressions Objectives: - Evaluate expressions containing variables - Translate verbal phrases into algebraic expressions

Vocabulary: variable: ____________________________________ ____________________________________________ algebraic expression: __________________________ ____________________________________________

Translating verbal phrases into expressions: Steps: 1. _______ the problem carefully 2. _______ a variable 3. _______ the operations in the verbal expression

Translating Practice: 1. Twelve points more than on the past test - Define the variable: _________________ - Identify the operation in the expression - Write the expression: ________________ 2. Two miles less than the athlete ran - Define the variable: _________________ - Identify the operation in the expression - Write the expression: ________________ 3. Five more than three times a number - Define the variable: _________________ - Identify the operation in the expression - Write the expression: ________________

1-4 Properties Objectives: - Identify and use properties of addition and multiplication - Use properties of addition and multiplication to simplify algebraic expressions

PropertySymbolsExamples Commutative Property of Addition Commutative Property of Multiplication Associative Property of Addition Associative Property of Multiplication Additive Identity Multiplicative Identity Multiplicative Property of Zero

Simplify: __________________________________________ Steps: 1. ________ placing like terms together 2. ________ like terms Practice: Simplify each algebraic expression 1. (p + 6) (m 5) ( x - 7)4. ( 3 d) 9