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How to successfully finish an exam on time
Quickly review and assess the questions.
When you receive your exam, read through all the questions before you begin. Note how much each question is worth and gauge how long you should spend working on each one, making sure that the time you assign to each is proportional to how much they're worth.
Make sure that you read through the instructions thoroughly so that you know exactly what to do when you begin the test. Answer the questions you know the answers to first.