At the basic level, middle school students make fewer mistakes in the basic questions, and the meticulousness of the calculation is the key.
Most of the problems are difficult for middle school students to get points, the input and output are relatively low, how difficult the quadratic function is and how difficult the circle is to work, which has nothing to do with most middle school students.
What really determines whether middle school students can go ashore is the calculation that is not difficult and prone to errors, including polynomials, inequalities, fractions, trigonometric functions, probability and statistics, etc.
At this level, if you can do no mistakes and ensure the scoring rate of basic questions, you can surpass most students of the same grade. Calculation in junior high school is not difficult, it is more detailed, and most calculation errors can be avoided by rechecking it more or substituting it for numerical verification.
Intermediate level, a competition between eugenics.
The guarantee foundation is still the premise, there are fewer simple mistakes at the level, the calculation accuracy is only the basis, everyone will know the simple questions, and the too difficult ones will not, and the gap between the difficult questions will be grasped.
The competition for intermediate problems in junior high school mathematics is not calculation, but focuses more on entry-level logical reasoning, such as congruent triangles, one-time functions, etc., as well as simple moving point problems. Many students are under great pressure during the exam, and it is easy to have a short circuit in thinking, which leads to the fact that they usually do the questions and the exam state can not be done, on the contrary, if they do it more smoothly, they can often get some points in the finale questions.
Advanced level, the competition of the finale questions.
The finale questions of junior high school are often nested with moderately difficult questions, and the competition is not entirely about thinking ability, but about patience in solving problems.