Just for the record the exams no longer have cascading questions/marks as questions pulled randomly from QB. Also note you can only take material listed as valid for the exam into the examination room.
In GN it is CRITICAL that you can use a CRP5 without having to think too much.
Can't use a CRP5 equals exam failure it's that simple, however, when learning it's more important to get the answer correct FIRST then build up speed with practice.
You also need to think of the profit to effort ratio in answering a question. For example if a question is worth 2 or 3 marks then it is worth the time & effort. However if there is a 1 mark question say on departure and it is going to take you 3 minutes to answer this is not good PE ratio and you would be better coming back to it later (if time allows after the 2/3 markers). Definition questions should be done in seconds.
At the end of the day you are after getting 75% by the easiest means possible.
If you know what you are doing it is not difficult to get 90%+ with time to spare.
Freelance ATPL GNav instructor.