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Math 150 – Fall 2015 Order of Operations 1 of 1 Order of Operations Please Excuse My Dear Aunt Sally PE | MD | AS 1. P – Parentheses: First calculate the inside of any parentheses. 2. E – Exponents: Calculate the Exponents 3. MD – Multiplication & Division: do all the multiplications and divisions in order from left to right. Note that a ÷ b · c = (a ÷ b) · c = ac a ·c= b d 4. AS – Addition & Subtraction: do all the additions and subtractions in order from left to right. a − b + c = (a − b) + c Example 1. Evaluate the following: 1. 15 ÷ 3 · 4 + 3 ∗ 2 − (−22 + 5)2 + 3 2. LC #11