Oh man, I hated my A-Level Maths exams. I would walk out knowing I had double checked ever calculation and thought to myself If I don't get a 100% I will scream. (I did that for about 6 exams) and I always ended up with 95-98%. So where I went wrong? I don't know
But my last exam had very simple maths, a lot of descriptions of how various systems work. Whilst I knew all the material well, I still have difficulty putting it onto paper. Particularly this one question I think I answered everything well, but in the wrong order as some questions were similar, others vague. And one didn't make sense at all! Which worried me because it was asking me something that contradicted what I knew. So I didn't know exactly what was being asked. In fact my exam before that had a similar question. It was soo vague that I pulled a face if you had asked me "how do you get a dolphin to push a shopping trolly".