Intermediate 2 Mathematics/Algebraic Operations

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Order of Operations[edit]

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

Parentheses



Excuse

Exponents



My

Multiplication



Dear

Division



Aunt

Addition



Sally

Subtraction


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