Section 1.1 Expressions & Formulas August 24, 2010

Vocabulary Order of Operations Order of Operations Procedure followed when evaluating numerical expressions Procedure followed when evaluating numerical expressions A common acronym is used as a memory device A common acronym is used as a memory device

Order of Operations PParentheses/Brackets PParentheses/Brackets EExponents EExponents MMultiplication MMultiplication DDivision DDivision AAddition AAddition SSubtraction SSubtraction Please Excuse My Dear Aunt Sally. Be sure to start with the inner-most grouping symbols Be sure to start with the inner-most grouping symbols Always work from left to right Always work from left to right 4 basic math operations

Example 1-1a Find the value of Example 1: Example 2: Evaluateifand

Example 1-3a Evaluateif,, and Example 3: Example 4: Evaluateifand

Example 1-4a Find the area of a trapezoid with base lengths of 13 meters and 25 meters and a height of 8 meters. Area of a trapezoid Example 5:

Homework Worksheet 1-1 # 1 – 25 odd Worksheet 1-1 # 1 – 25 odd Complete on a separate sheet Complete on a separate sheet Write the problem and show work. No work – No Credit Write the problem and show work. No work – No Credit