1, the current national examination questions tend to solve equations (that is, using equations to solve problems quickly and using Olympiad numbers slowly), while the joint examination questions tend to use basic knowledge flexibly.

2. If logical thinking is cultivated in the early stage, the mathematical olympiad in primary school will not be mysterious in junior high school. Combined with the understanding of the equation, it can be digested, and many people can do the olympiad directly without combining the equation after the second day of junior high school. You don't need to read Olympic math books in primary schools.

Second, we should practice more and improve the speed of solving problems, because this is practicing our brains. Generally speaking, the civil service exam is still about the level of logic, and practicing more brains is helpful to the divergence of logical thinking.

Thirdly, the last two questions are difficult to answer: on the one hand, it shows that you may never have worked hard on math, on the other hand, it shows that you want to take shortcuts. There are shortcuts, but they are difficult. It is best to receive professional training, but in this world, it is difficult to choose a school.