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Order of operations: 

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Key Concept

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Order of operations (PEMDAS)

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To simplify the expression follow the order of operations: (PEMDAS)

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1.     Evaluate the expressions inside Brackets/Parenthesis (P).

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2.     Evaluate Powers/Exponents (E).

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3.     Multiply and/or Divide in order from left to right (MD).

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4.     Add and/or Subtract in order from left to right (AS).

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A simple technique for remembering the order of operations is turned into phrase

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“Please Excuse My Dear Aunty Sally”

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\"\"

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The expression is \"\".

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\"\"  

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                                          (Substitute: a = \"\", b = \"\" 3 and c = 0.5)

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\"\" 

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In the given expression there are grouping symbols. 

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Evaluate the expression within the parenthesis. 

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First operation is subtraction. 

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\"\"    

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                                            (Subtract: \"\")

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Next operation is division.

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 \"\"      (Divide:\"\")

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Next operation is evaluating powers.

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\"\"           (Evaluate power: \"\")  

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Next operation is multiplication.

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\"\"               (Multiply:\"\")

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\"\"                     (Signs are same. So, product is positive)

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\"\"                           (Add:\"\")

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\"\"

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The value of the expression is \"\".

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