Results 26 to 43 of 43
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09-03-2017, 06:52 PM #26
Calling any Old Brits who remember their Math
This was covered by iceman and glademaster...
PEDMAS stands for
Parentheses
Exponents
Division and Multiplication (from left to right)
Addition and Subtraction (from left to right)
The arithmetic problem as stated by the OP is missing the parentheses, so as to be intentionally vague. Similar problems have been floating around Facebook for quite a while.
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09-03-2017, 08:51 PM #27
The expression in the OP is valid without parentheses; PEMDAS is used with and without. The parentheses are missing only if the answer is known to be 77.
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09-03-2017, 08:55 PM #28
Parentheses could be inserted but the equation is to test knowledge of order of operation. With knowledge of order of operations there is only one answer and the extra ( ) are redundant but I have to admit I throw them in for clarity.
My question was when was the old method that was taught just left to right ended. In the UK in the 70s, in US and Canada ? I think much earlier. As above you cannot do semi complicated math just using left to right. E=mc**2 has to written E=m(c**2) to get the right answer with left to right ( or old British method ( it worked so well for teeth))
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09-03-2017, 08:57 PM #29Funky But Chic
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@Maz: Parentheses aren't required of course, Poindexter. They sure help to make things crystal clear for the less enlightened though.
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09-03-2017, 09:38 PM #30
Do the parentheses take off?
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09-03-2017, 09:38 PM #31
PEMDAS is taught in or around fourth grade (I just looked it up). But let's go with enlightened.
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09-03-2017, 09:59 PM #32
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09-03-2017, 10:16 PM #33
Any Brit worth his bangers knows the answer is 42.
I agree it is a constitutional right for Americans to be assholes...its just too bad that so many take the opportunity...iscariot
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09-04-2017, 12:50 AM #34
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09-04-2017, 01:00 AM #35
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09-04-2017, 05:19 AM #36
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09-04-2017, 07:38 AM #37
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09-04-2017, 09:20 PM #38
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09-04-2017, 09:24 PM #39Rod9301
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Pls tell me that this thread is a joke.
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09-05-2017, 06:32 AM #40
nope very real, the long story, about 6-12 months ago a neighbour posted on Facebook on those most people get this wrong math problems, which the trick was order of operations. It was just people at the end of road. Well an older Brit (58ish) got all " I was taught simple left to right and that is just as valid....." the Engineer and ex math teacher simply said no that is wrong and I posted a Brit Utube on the way its supposed to be done. Case closed I thought. Fast forward , I read in a comment in some Facebook page that has a similair equation question with 1000s of comments. Well the Brit neighbour is still terribly butthurt about this and referenced that earlier thing, as we were being arrogant for not recognizing that people could be taught something different and that he was hurt that we thought that he was lying.
I commented something like " its a good thing you didn't become a Engineer ' as a bit of a slam. And self esteem issues took off and got pretty ugly. Anyway I could find nothing about if it changed and if when. Wanted to see if he was totally full of shit. I guess the Brits kept this old method till the 70s.
The funny thing is while he was taught the old method, he did know that everywhere in the world including bad teeth land had changed to the current , but had pigheadedly kept with the old. Supper stupid I know.
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09-05-2017, 09:17 AM #41
It certainly could have been taught differently at one time. It's purely a matter of convention. Math(s) is a language and for it to be comprehended by all everyone has to agree on the same conventions, hence PEMDAS.
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09-05-2017, 02:18 PM #42Rod9301
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I'm sorry but there's no way math was taught that way. In any country.
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09-05-2017, 04:31 PM #43
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