Mathematics in primary schools is mostly a basic definition and concept. I suggest that as a first step, you spend 2-3 days reading your math textbook carefully. Passing means that the definitions and concepts emphasized in the textbook are concentrated in the sixth grade.

The rest of the time, you don't have to do every problem in the math textbook, but at least you have to do several typical problems for every big problem.

Don't read any extracurricular materials at this time, because your time is too late, and textbooks are your best teaching AIDS. Finally, I wish you success in the quiz.