gotbeer and notoriouspre – BODMAS (or, as you seem to call it in America, PEDMAS) is a list of 4 operations, not 6: 1. Brackets, 2. Other (indices, surds etc), 3. Division AND Multiplication 4. Addition AND Subtraction. When faced with a problem like the one above, do ALL the multiplications and divisions first, from left to right (unless the division is expressed as a fraction in which case deal with the numerator and denominator separately), then ALL of the additions and subtractions from left to right, not all the additions first then all subtractions. So in this case, first do the 1×0 as you said but then you do not add all the 1’s to the left of the subtraction sign and subtract all the 1’s to the right of it from them but rather you add all the 1’s to the left then subtract the 1 immediately to the right of the subtraction sign and then carry on adding all the 1’s.
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