First: honestly recite the square number. By the second day of junior high school, the quadratic equation had come out. If the square number has not been memorized at this time, the calculation will be very slow. Whether it is an exam or doing homework, the slow speed of doing problems will seriously affect the learning efficiency, and the square number is not much. I will make a little effort to memorize the square number, so my first suggestion is to memorize the square number first.

Second, quickly carry out the study of geometry. The difficulty of junior high school mathematics lies in geometry, especially after the second year of junior high school began to intervene in congruent triangles, the overall difficulty has been upgraded to a higher level, and many students have been left here.

Many students stumble in geometry because congruent triangles's topics have changed greatly since the second day of junior high school. Some topics, such as rotation, symmetry, translation and even auxiliary lines, make students miserable. Therefore, it is difficult to improve your score without a certain amount of practice and a grasp of typical questions. From grade one to grade two, the learning content and learning difficulty have changed so much that most students can't adapt.

Third: Do more real questions. Do more typical examples and real questions in previous exams and get familiar with related questions quickly. If your grades are really poor, I suggest you tackle the algebra part first, and try your best to get all the scores in the algebra part, and don't lose a point. In the case of guaranteed scores in algebra, you can conquer geometry, do some basic problems well and get corresponding scores in the exam. In this case, the whole score will not be too bad, and even slightly improved.