Math Teaching Tools


The following is a list of ways to remember the Order Of Operations.



Order of Operations
Order Operation Memory Aide
1
 Perform any operations inside parentheses, or above or below the fraction bar.
P
2
 Complete all exponents.
E
3
 Perform all multiplication and division from left to right.
M D
4
 Perform all addition and subtraction from left to right.
A S

The Memory Aides spell P E M D A S.

Some people learn to remember the order by saying Please Excuse My Dear Aunt Sally.

Just remember that even though M comes before D in PEMDAS, they still must be done from left to right.


Examples:

Problem Answer Order of Memory Aides
5 - 3 + 2
4
S A
(7 + 5)/4
3
P D
12(2) + 1
25
M A
20/5 + 3(42)
52
E D M A
25 - 3(8)
1
M S
5 + 2(12 - 3)
23
P M A


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