What kind of trouble does the Olympiad bring us?

Brought the trouble of having to ask questions in the know.

First of all, we must figure out what the Olympiad is. Mathematics is mathematics, and the so-called Olympiad is actually because of the Mathematical Olympiad. In fact, Olympiad mathematics is also mathematics, but it focuses more on divergent thinking, improving problem-solving skills and the use of comprehensive ability, or in other words, the "difficult" point of the problem.

Then, for students who have a good grasp of basic knowledge, it is obviously beneficial to learn some further problem-solving skills and methods to improve their mathematical level and even intellectual level.

Why does the state ban the teaching of Olympiad mathematics? Isn't this caused by the Education Commission itself? In the past few years, international, domestic, provincial and municipal Olympiads for primary and secondary school students, including mathematics, have been in full swing.

There should be a national policy, and the winners of different levels of competitions will have irresistible rewards, and they will be given extra points for further education, and even enter key schools without examination. As a result, many students are working hard to learn "Olympiad Mathematics" towards this goal. Even many students in order to get the extra points for further education, no matter how the basic knowledge is mastered, but also sharpen their heads to squeeze the Olympiad, there are some people who are not even clear about the meaning of the Olympiad, see that the people around them are learning the Olympiad, but also follow the trend, in this way, obviously affect the learning and mastery of the basic knowledge, it is indeed a bit of a seedling to help grow, played a bad role.

Later, many people of insight in China put forward different opinions on this, and in the end, the State Education Commission explicitly banned it.

In fact, the State Education Commission's explicit ban on Olympiad education is also one-size-fits-all, and it is certainly not a good regulation. As for the Olympiad, I think the Education Commission needs to prohibit it explicitly, only prohibit all the winners of the Olympiad competition from giving preferential treatment in further education, and appropriately reduce the organization and holding of the Olympiad competition. In this way, without the influence of utilitarian thinking and friends, the popularity of Olympiad teaching will be reduced and return to the category of rationality.

Therefore, I think that for primary and secondary school students, it is beneficial and harmless to learn Olympiad mathematics appropriately on the basis of learning basic knowledge. But don't think of Olympiad as a new course, but be clear that it is actually an "improvement class" for mathematics education.

Yuan. 2.(1+20%)*80%=96% 64 (1-96%)=1600 yuan.

Yuan. 4.The pricing is (180+240) (20%-10%)=4200 yuan.

The purchase price is 4200 (1-10%)-180=3600 yuan.

5.The purchase price is 4 (27%-25%)=200 yuan.

The original price is 200 (1+27%)=254 yuan. 6.Armor.

Second. Nail height. 7.Pricing of B: RMB.

The price of A: 160 90% = 144 yuan.

8.(10*20-11*15) (20-15)=35 5=7 yuan.

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6. A: B: So A is high.

After a rough calculation, you check the calculations, and you can mention any questions.