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Bidmas, Bedmas, Bodmas, Pedmas And Christmas

This BBC GCSE Bitesize post says, BODMAS stands for 'brackets', 'other', 'division', 'multiplication', 'addition' and 'subtraction'. It's the order in which we carry out a calculation.

But another article says, the order of operations in Maths called BIDMAS. BIDMAS stands for Brackets, Indices, Division and Multiplication, Addition and Subtraction.

The difference is that the second substitute 'o' with 'i', and we can understand that teacher normally chooses easy way to explain whose pupils can understand, exponent or power or indices are out of reach of foundation students, so teachers uses 'other' instead.

And in this article, 'o' actually stands for 'order', as far as my memory can go, my English teacher never teach me 'order' actually means 'Powers and Square Roots, etc.'

In United States, the mnemonic fo Order of Operation is PEMDAS, because brackets are called parentheses by American, and it stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

There are other forms in other English speaking countries. BIDMAS, BEDMAS, BODMAS, why Americans PEDMAS, so make up a series of words for the collection of Christmas, Candlemas?

Another nice song of BODMAS

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