The way that papers are set is that you usually can allow just over a minute for each mark. This means if a question is 6 marks, it should take about 6 minutes to answer. It is generally a good idea to be quite strict with this to allow you time to check through your paper for mistakes at the end. Many of the questions at the beginning of the paper will take much less than the allotted time (eg a 4 mark question may only take you 3 minutes) however towards the end they often take more time (the large question at the end can take about 10 minutes), however as a general rule, towards the beginning and middle of the paper don't spend much more than a minute per mark.Read each question very carefully, and then read it again to ensure you are certain you know what it is asking you to do. Then start to answer the question. Make sure you write down every stage of your calculations, even if they are done on a calculator as if you get the answer wrong you still can gain marks for your method. If you are unsure of what to do, move onto thenext question and come back to it once you have completed and checked as much of the paper as you can. If you are still unable to answer it, it is worth putting down any ideas you may have or trying different methods of working it out, you may gain method marks even if you can't get the answer. This is very time consuming, so again, make sure you have answered as much of the rest of the paper as you can!