Use the study guide with the corresponding chapter in your module. DO NOT attempt to answer the study guide questions before you spend time learning all necessary concepts. After going through the study guides and, assuming you have grasped all the material related to each module, you should be ready to take the quizzes. These quizzes were written for you to test your overall understanding. Try to reason and not look back into your notes.
Mathematics can be a game.
Just follow the rules with some logic.