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

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

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: ________________

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