Parenthesis Exponents Multiplication and Division and finally Addition and Subtraction. Or go from right to left. The order of operations is a mathematical and algebraic set of rules.
Mathematicians have agreed on a correct order to use operations and it is very important that they know these rules.
For example take the expression 4cdot 7-2 If we do the multiplication first we arrive at the following answer. Evaluate any expressions with exponent. When you are faced with a mathematical expression that has several operations or parentheses the solution may be affected by the order in which you tackle the operations. M ultiplication and D ivision from left to right A ddition and S ubtraction from left to right One way to memorize this is to think of the phrase P lease E xcuse M y D ear A unt S ally.