Please take note that I am just sharing my experience, and you should take it as a grain of salt. In my experience, you need to perform decently well on EACH question to pass all FSA exams (at least for Life track). That means a 6 out of 10 for each question. DO NOT leave any question (or sub-question) blank.
I was once told that if you get a 6/10 for all 10 questions, you would pass (6 x 10 = 60). However, if you get 10/10 for 5 questions and then 2/10 for the other 5 questions (which would still give you 60), you will fail. The former shows that a candidate have a decent, basic understanding of all topic. The latter demonstrates that there is a large imbalance in your understanding on different topics, and graders do not allow candidates of the latter to pass. So make sure you do not bomb a single question. Try to write something (anything, a formula even) if you have no idea how to attempt a question. DO NOT leave any question blank. Avoid getting 1, 2 or 3 out of 10. I think a 4 or 5 out of 10 for a question or two would still give you a higher chance to pass as long as you have other questions that you scored better (6 or above).
Please bear in mind that this score (6 out of 10) also depends on how well you did in comparison to other candidates. For example, if there is an easy question worth 5 points, and let’s say you made a mistake and got 3 out of 5 points (which would technically give you a 6 out of 10 score, and hence, passed that question). However, if most candidates are able to get full marks on that question, then your score will likely bumped down. So it depends on how well you did compared to others. In contrast, if there is a hard question, and if you at least write an answer with your justification (even if it is slightly wrong), then you might (emphasis on might) get a higher score if most candidates fail to answer this question. So this means DO NOT panic when you see a hard question during an exam.
So in summary:
- Perform decently well for EACH question is the way to go (at least a 6 out of 10).
- Try writing something, instead of leaving a question blank.
- Do not bomb a single question.
I hope this helps. Let me know if you have any other questions. Cheers!