First of all, be confident. As a mid-term exam, most of the questions can be correct, and individual questions will be difficult, in order to distinguish the results.

Do it well first, so as not to lose points unnecessarily. You can try your own way. I suggest that when you do math problems, you'd better calculate the time, how much time to choose multiple questions, how much time to fill in the blanks, how much time to ask big questions, and then check the time. Because the exam questions have been basically determined, you can focus on contact, such as the first big question, 5 minutes or 7 minutes, to ensure accuracy. There is still a question that should be carefully examined first, and then carefully considered and answered.