bad at math

bad at math.gif

this was an actual argument between my wife and I.  She says that “order of operation” mandates that you do the multiplication first, which in theory is true, but I stand by my stance that you MUST use parenthesis to remove all doubt, because it makes no damn sense to do things right to left and not left to right.

so in this case, 2+2*x should really be on the board as 2+(2*2).

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12 Responses to bad at math

  1. Your wife is right, you’re wrong. Parentheses are only necessary when the order of operation would result in a result that is not the one intended. For example, in the above video, the only way to legitimately make the illustrated equation yield a result of 8 is to express it as “(2+2)x2”. Without the parentheses, the correct result is 6. You say they’re necessary “to remove all doubt”. However the only time there would be doubt would be when you don’t understand “order of operation”.

  2. I’d buy “should” ad in “I think it ought to be this way, instead of how it is.” That’s just an expression of opinion. However, the way that it is is definitely the way your wife has it.

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