The national paper is also used, but there is a certain gap in the mathematical difficulty between the two papers. Candidates generally report that the national paper is more difficult than the national paper, 70% need to learn basic knowledge, and the other 30% need to think deeply. Generally speaking, the number of questions is relatively large and the examination time is relatively tight.

Although the difficulty of National Paper A is slightly lower than that of National Paper B, the writing of the questions is relatively novel, and some questions adopt sharp corners, so that candidates can't start, and the difficulty is not lower than in previous years. Generally speaking, the difficulty of mathematics in national examination paper is not as simple as imagined.

Mathematical characteristics of 202 1: paying attention to real production and life.

For example, the second volume of the National College Entrance Examination, Science Question 17, based on the etching rate in chip manufacturing, designed an application question of probability statistics, inspected the examinee's understanding and application of knowledge such as mean and variance, and guided the examinee to establish a correct outlook on life and values. The sixth question in the second volume of the new college entrance examination is based on the measurement of a physical quantity, which examines the understanding and application of the basic knowledge of normal distribution and guides students to pay attention to mathematical experiments and applications.

202 1 Math Test Paper has well implemented the core functions of "educating people, serving talents and guiding teaching", adhered to the core value of the college entrance examination, highlighted the subject characteristics and attached importance to the essence of mathematics, which has played a positive guiding role in deepening the reform of mathematics teaching in middle schools.