What Does "PEMDAS" Stand For?

"PEMDAS" is an acronym for the order in which operations are performed in a mathematical expression: parentheses, exponents, multiplication, division, addition and subtraction. If there are parentheses, that operation is completed first. Any exponents are taken care of next. Multiplication and division operations follow exponents, but multiplication does not outrank division. Addition and subtraction come last, and they, too, have equal stature.