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AGENDA – ALGEBRA 1AAUG. 23, 2012 (THURSDAY)
Go over the homework Lesson 1.2 – Order of Operations Objectives:
1. Evaluate numerical expressions by using the order of operations.
2. Evaluate algebraic expressions by using the order of operations.
Standard 7AF1.2 – Use the correct order of operations to evaluate algebraic expressions.
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CW #4 – Skills Practice (odd) HW #3 – Skills Practice (even) Reflection
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PEMDASParenthesisExponentMultiplicationDivisionAdditionSubtraction
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Example 1: Evaluate each expression.
a. 15 ÷ 3 6 – 42
b. 8 – 6 4 ÷ 3
c. 32 + 72 – 5 2
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Example 2: Grouping symbolsEvaluate each expression.
a. 2(5) + 3(4 + 3)
b. 2[5 + (30 ÷ 6)2]
c. 43
462
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Example 3. Evaluate an algebraic expression.
a. Evaluate a2 – (b3 – 4ac) if a = 7, b = 3, and c = 5.
b. Evaluate x(y3 + 8) if x = 3 and y = 4.