Don’t panic if you see a very difficult question. Remember that around 25% of the questions in the verbal and quant sections are experimental questions. While taking the exam focus on the question in front of you and try to do it as quickly as possible.
Use the note board given to you to make eliminations and get to the correct answer. You can also use the note boards to take notes as you read and do calculations.
You have two optional breaks which can last up to 8 minutes each. Do make use of the breaks to refresh your mind. But do remember that if you exceed the allotted time, the additional time will be deducted from the next test section.
You already know that timing is important for the GMAT. If you do not complete all the questions in a section within the allotted time, a penalty will be imposed for not completing the section.
After the test, you will have two minutes to decide if you want to accept or reject your scores. The default option is to cancel, so you need to quickly accept the score, should you want to do so.
In case you feel overwhelmed, look away from the screen and take a deep breath. Then work to finish the question in front of you as soon as possible. You have put in a lot of effort towards your GMAT but only your test day performance will determine your actual scores.
Do not study/practice anything new on the day of your test and the previous day