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 Post subject: Fraction explanation...Posted: Sun Jan 18, 2015 9:44 pm

Joined: Fri Jan 31, 2014 12:45 pm
Posts: 154
Hi, could anyone please identify which of these answers is correct, and help explain why...

"From 1 3/8 (ie one and three eighths) subtract 1/2 + 3/4"

I worked it out as 11/8 - 4/8 + 6/8 = 13/8 ie 1 and 5/8, DD worked out 11/8 - (4/8 + 6/8 ie 10/8) = 1/8 ie one eighth. As far as I had thought, in BODMAS the addition and subtraction had equal weighting, but is it not therefore the case with decimals/fractions?

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 Post subject: Re: Fraction explanation...Posted: Sun Jan 18, 2015 10:42 pm

Joined: Wed Jul 11, 2012 7:05 pm
Posts: 219
I agree this is confusing, and the way I would have interpreted it is;

From 1 3/8 subtract (1/2 + 3/4) and therefore ie would have said 1/8.

The combination of words and symbols does lead to ambiguity, and I'd say its a poorly written question.

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