The really important thing is before the test, you should handle all the statements that we learned in the class very well.

When you doing the test, first, read the question carefully, and find if there are some points or hints that directly relate to the knowledge that we learned before. Second, make sure the equation or idea that you get follow all the conditions that have been said in the statements. If not try to change the format or use other methods to get the solution. Third, once you get one solution check the answer make sure it follows what the question asks.

Also, suitable confidence helps a lot when you writing the test.