Intermediate 2 Mathematics/Algebraic Operations
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Parentheses Exponents Multiplication Division Addition Subtraction
Order of Operations
[edit | edit source]The order of operations tells you what to do first when you see a problem. This is something that you will keep for all levels of math. The order of operations is fundamental even past Calculus.
An acronym that helps memorize this order is P.E.M.D.A.S.
Another way to memorize it is by saying:
Please
Excuse
My
Dear
Aunt
Sally
Here are some examples of how this works:
Ex.1
Solution
Before we start the next example let's take a look on how this problem would look if we hadn't had the parentheses.
As you can see doing things in a certain order really does change the outcome of the and equation.
Ex.2
Solution