Pacman Eats Many Dots After Sleep
PEMDAS in this acronym means that Parenthesis is first and then it's exponents, multiplication, division, addition and subtraction. This is called the order of operations. I tells you which signs should be answered first and it is an efficient way to solve a math problem.
The Good Of It
It tells you a more simple way of answering problems. You can remember what goes 1st, 2nd and third. Each letter stands for a whole word of what you should do in a mathematical sentence.