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The abbreviation P.E.M.D.A.S. came from mathematics. P.E.M.D.A.S. is normally taught at a fifth grade level and stands for: Please Excuse My Dear Aunt Sally, also known as:Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. This is an easy way to remember the order of a fifth grade equation.

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Q: Where did PEMDAS come from?
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