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The usual rules are: * Evaluate anything within parentheses first. * Evaluate multiplications and divisions from left to right. * Then evaluate additions and subtractions from left to right.
You didn't include division in your question, but I will include it in the answer. First, evaluate all the exponents. Second, do all the multiplications and divisions together, in order from left to right. Third, do all the additions and subtractions together, in order from left to right.
BIDMAS (UK) or PEMDAS (US). B or P : Brackets (Parentheses) I or E : Index (Exponent) DM or MD : Division and Multiplication. Equal priority, evaluate from left to right. AS : Addition and Subtraction. Equal priority, evaluate from left to right.
First evaluate all powers. Then evaluate multiplications and divisions, from left to right. Then evaluate additions and subtractions, also from left to right.Parentheses change the order of operations: you must evaluate anything in parentheses first, before combining it with anything outside the parentheses. Within the parentheses, the first rule also applies (first evaluate powers... etc.).Parentheses can be implied in some cases. For example, in fractions, you have to evaluate the numerator and the denominator separately, before carrying out the division of numerator / denominator. Also, in the case of powers, e.g. 25+3, the exponent has to be evaluated before the power. In the example, you add 5+3 before calculating the power.
NoRestate the question: When using the order of operations to evaluate an expression would you always do multiplication before division?If this is not your question, please clarify and ask the question again. :-)No. Unless parentheses or other grouping symbols indicate otherwise, you do multiplication and division in order from left to right.