[–] 0 points 11 months ago*

Brackets and Orders, not that anybody calls “(” a bracket or “^” an “order”.

It's "to the order of" actually. 2² is 2 to the order of 2

not that anybody calls “(” a bracket

Yes we do. They're ALL Brackets - square, round, squiggly...

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  • [–] 0 points 11 months ago (4 children)

    multiplication and division are the same operation

    No they're not, but they are both binary operators.

    in order to stop confusing people, it should just be: BOMA.

    Leaving out D and S confuses people about where to do them in the order. It's intended to be used as a checklist

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  • [–] -1 points 11 months ago

    I’ll never understand these approaches to learning. They require remembering the phrase, and then require remembering how the phrase translates to the rules you need to remember

    Yeah, exactly, but the U.S. seems to have a chip on it's shoulder about always doing everything differently to the whole rest of the world. "Maths? We're not going to use BEDMAS, and we're not going to call them Brackets, and...".

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  • [–] 0 points 11 months ago

    You don’t necessarily have to do parentheses first

    Yes, you do necessarily have to do it first

    What matters is that the things inside the parentheses are a group that you can’t break apart

    And outside, and you must do them first. You haven't finished Brackets until you have 5(8-5)=15.

    10÷2+3-2*(2+1) you can do the division first

    only because you've separated that part with a plus sign

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  • [–] -1 points 11 months ago* (8 children)

    so it would be clearer

    That's because it's already clear as is, as per the rules of Maths.

    I think someone told me that order of operations is like a natural law

    It's a natural consequence of the definitions of the operators. e.g. Multiplication is shorthand for repeated Addition - 2x3=2+2+2 - so if you don't do it before addition you end up with wrong answers. The order of operations rules is in fact just breaking everything down into Addition and Subtraction and then solving from there.

    not a convention

    There are some conventions, like left to right, but in that case that's only because students tend to make mistakes with signs when they don't go from left to right, so it's there to preserve teachers sanity.

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