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.

CW #4 – Skills Practice (odd) HW #3 – Skills Practice (even) Reflection

PEMDASParenthesisExponentMultiplicationDivisionAdditionSubtraction

Example 1: Evaluate each expression.

a. 15 ÷ 3 6 – 42

b. 8 – 6 4 ÷ 3

c. 32 + 72 – 5 2

Example 2: Grouping symbolsEvaluate each expression.

a. 2(5) + 3(4 + 3)

b. 2[5 + (30 ÷ 6)2]

c. 43

462

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.