During the math exam, there will always be annoying music in my ears, and I will always think about other things in my mind, so I can't concentrate. What should I do?
I have had a similar experience, and the more I care, the worse I feel.
So don't think about it. You can try to read the topic silently (not too loudly, of course) when reviewing the topic, which will help you concentrate.
Come on!