Remember My Dear Aunt Sally? Unless there are 'Parentheses' or 'Exponents', you do Multiplication and/or Division as you come to it from LEFT-TO-RIGHT.
Always begin at the LEFT and work across to the right for EACH level of operations
After you complete all the Multiplication and Division, then do the Addition and Subtraction. Again do either operation as you come to it from LEFT-TO-RIGHT.
Please copy and solve this problem on your paper:
20 - 3 * 2 + 4 =
Order of Operations Automatic Flip-Through SLIDE SHOW
Overview of the Order of Operations
© 1992, 1999 Amby Duncan-Carr All rights reserved.