1. 1.2 Order of Operations

2. So what do we do first with expressions that have more than one operation? Order of Operations P(please) - Parentheses E (excuse) - Exponents M(my) - Multiplication D(dear) - Division A(aunt) - Addition S(sally) - Subtraction Left to Right

3. Example #1 Evaluate Now try Check Your Progress #1 A & B A. 0 B. 71 Answer = 14

4. Grouping Symbols – what are they? When more than one grouping symbol is used, start evaluating within the innermost grouping symbols. Example #2: Evaluate each expression A) B) C) 31 5/18 60

5. Example #3 Evaluate Now Check Your Progress #3 Answer = 42 Answer = 18

6. Example #4 The Pyramid Arena in Memphis, Tennessee, is the third largest pyramid in the world. The area of its base is 360,000 square feet, and it is 321 feet high. The volume of a pyramid is one third of the product of the area of the base B and its height h. A) Write an expression that represents the volume of a pyramid. B) Find the volume of the Pyramid Arena. V = 1/3 Bh V = 1/3 (360,000)(321)= 38,520,000 ft 3

7. Homework #2 Practice Worksheet 1.2