First, the new changes in mathematics of Chongqing senior high school entrance examination in 2020

The scores in 2020 are the same as those in the senior high school entrance examination in 20 19, and the questions are still the same as those in 19. Multiple choice questions 12, fill in the blanks 6, answer 8. Judging from the difficulty of the problem, it is still 6:3: 1. Basic knowledge 60%, moderate difficulty 30%, difficult problem 10%. Knowledge points investigated: algebra accounts for 50%, geometry knowledge accounts for 30%, statistics and probability 10%, and comprehensive practice 10%.

Second, although the question type has not changed, the knowledge points of the investigation have increased and the scope of the investigation has also expanded.

Possible knowledge points to be added in 2020:

1, to investigate the similarity of graphics (multiple choice questions), which has not been investigated before. Recently, many middle schools in Chongqing are practicing this knowledge point, hoping to attract attention.

2. It is difficult to find out the specific values of A, B and C by learning the basic knowledge of unary quadratic function and judging abc symbols and discriminant. I hope the students will take it seriously.

3. Add the knowledge points with the largest moving point, mainly the finale of the basic questions, and the topic is roughly 18. To do this kind of problem, you need to know the trajectory of this moving point, so as to solve the problem conveniently.

4, the knowledge points that may change, the first 20 questions examine geometric small questions, which are relatively simple. However, you can examine the circular proof questions. It is best to be familiar with both types of questions, so that you can master them no matter how you take the senior high school entrance examination.

5. Questions 25 and 26 were changed in the finale. Before 20 19, these two questions were all two, and may become three in 2020. The difficulty of quadratic function will be reduced, and the problem of finding the maximum value will not be pursued. Recently, school exercises mainly focus on angle and isosceles triangle. Although the difficulty is reduced, the amount of calculation is increased. I hope students pay more attention to the correct rate of calculation at ordinary times.

6, 26 questions into geometry, add a question, the third question is more difficult, mainly to investigate the geometry of the moving point, for middle school students, just finish the first two questions.