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Gwar! wrote:I was under the impression that it was Brackets, Ordinals (powers, Exponents whatever), Division, Multiplication, Addition then Subtraction, in that order?

I suspect it depends on where and when you were taught.

We were taught 'BOMDAS'... more or less the same as you, but with Multiplication before Division.

In practice, it generally makes no difference whether you do Multiplication then Division, or vice versa. Likewise with Addition and Subtraction.

Gwar! wrote:And it does make a huge difference.

(500/2)*3=750

500/(2*3) = 83.333...

Yup, that's my shaky 'it's been a heck of a long time since High School' memory...

It's actually down to precedence, rather than not actually mattering specifically. Division and multiplication have the same precedence, so without the brackets you would just work from left to right.

So 'BOMDAS' and 'BODMAS' are effectively the same thing.