Regarding rounding/significant figures

[hyperblade01]

TSSM 2008 paper attached

In question 1 of the short answer, there is a value of 0.05M which is used in calculations.  The answers have taken 2 significant figures, is there something I have missed?

Also, if it is 1 significant figure, should b) and e) also be 1 significant figure?

In question 4 of the short answer, their final answer is 43.9%, however with carrying the answer in my calculator, my answer after taking significant figures into account was 44.0%.




Just need some clarification, most questions will require you to give answers 'along the way' (part i, ii, iii etc). I quote these answers correct to the least significant figures, however I still carry the exact values in my calculator all the way till the end. Is this the safest approach?

Also, if my answer was wrongly rounded up/down would that cost me the mark for that question?

[Mao]

TSSM is shocking in this respect. Disregard them, you are probably right.

And your approach is correct. I am not 100% sure on penalties for small deviations, but I don't think they care that much.

[shinny]

Most (pretty much all) exam papers don't account for 'proper' transferral of sig figs from what I remember.