Yes, ksq, that was a blindingly obvious statement, wasn’t it - i.e. aiming to finish all questions. Sorry!
What I meant to say was, by the time your DS sits the KS exams next year, which is actually just a little over half a year’s time, he should be able to feel confident in answering all the questions but in a very limited time span. In theory, he has under ten minutes (9) to answer each question which has many parts. Obviously, some questions are harder than the others and would require more time. But what seems to be a hard question to one may be a piece of cake to another.
The KS papers are meant to test a candidate’s knowledge and application of the subject that is being examined. In Maths B, for example, most bright boys would be able to answer most, if not all, the questions in (say) three or five hours. But in the real test, he has only 1½ hours to do it. In other words, a successful candidate must know his subject thoroughly and apply it to the questions that he is answering. Speed is of the essence here.
Aiming to answer all the questions in the allocated time does not necessarily mean that a boy must get all the answers right. That would be virtually impossible! In Maths B, the examiners are keen to reward boys who can demonstrate knowledge and real ability - be able to apply their knowledge in their answers to the questions being tackled. Eton is at pains to stress the importance of showing the (full) workings to all the questions being answered. I cannot emphasise this point enough. Even though the final answer may be incorrect (not important) but the approach (application) taken to arrive at the final answer may be just the stuff the examiners are looking for and good marks will be awarded. Hence, making an attempt to answer ALL questions. To leave any questions unanswered is to throw valuable marks away. You can't afford that!