<P> Mnemonics are often used to help students remember the rules, but the rules taught by the use of acronyms can be misleading: </P> <Ul> <Li> In the United States, the acronym PEMDAS is common . It stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction . PEMDAS is often expanded to the mnemonic "Please Excuse My Dear Aunt Sally". </Li> <Li> Canada and New Zealand use BEDMAS, standing for Brackets, Exponents, Division, Multiplication, Addition, Subtraction . </Li> <Li> Most common in the UK, India and Australia are BODMAS meaning "B" rackets, "O" f or "O" rder, "D" ivision, "M" ultiplication, "A" ddition and "S" ubtraction . Nigeria and some other West African countries also use BODMAS . Similarly in the UK, BIDMAS is used, standing for "B" rackets, "I" ndices, "D" ivision, "M" ultiplication, "A" ddition and "S" ubtraction . </Li> </Ul> <Li> In the United States, the acronym PEMDAS is common . It stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction . PEMDAS is often expanded to the mnemonic "Please Excuse My Dear Aunt Sally". </Li> <Li> Canada and New Zealand use BEDMAS, standing for Brackets, Exponents, Division, Multiplication, Addition, Subtraction . </Li>

Meaning of please excuse my dear aunt sally
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