Pemdas - "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction".
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BODMAS is the acronym that can be used to remember the order or operations.
They are used to change the order in which arithmetic operations are to be carried out.
Exponents. Parentheses or brackets come first but they are not operations.
In Algebraic and even simple mathematical operations, convention to determines the order of calculations. This order is commonly remembered by the acronym PEMDAS, which stands for (and indicates the order of) parenthesis, exponents, multiplication, division, addition and subtraction.
In arithmetic's, it is good to calculate complex sums using the BODMAS order. Work on the items in Brackets and then proceed to do Of, Division, Multiplication and any Subtraction tasks.