Ask for Elementary School Math Olympiad questions? Require clear thinking, detailed steps, and easy

From immediately returning from the original road, meeting car B at a distance of kilometers from the west station, it can be seen that A has walked more kilometers than B, and the 63 kilometers are 12 kilometers more per hour than car B, then, 63 12 is the time for car A and B to go, both hours, hours minus the hours for car A to reach the west station, and the hours are the kilometers of time for car A to go, which is the speed of car A. The column is as follows:

42 (km).

Because A is 12 km h faster than B, A has walked more than B when he arrives at the West Station = 12 km h * hour = 54 km, that is, B is still 54 km away from the West Station.

In 54 kilometers, the cars are traveling in opposite directions, because A has traveled a kilometer, then B has traveled a kilometer, and A has traveled 9 kilometers more than B. Explain that the time spent on this journey is = the difference between the distance of the two cars The difference in speed between the two cars = 9 kilometers 12 kilometers per hour = 0. 75 hours.

The speed of car A is = distance time = km hour = 42 km h.

16 + 16 = 32 choose b

Note: The retrograde elevator is brought forward, and the retrograde elevator is pulled back.

It's the same as sailing against the current.

Olympiad has always been the focus of primary school students' learning, parents try their best to improve their children's math scores, to give their children the best school, so how to quickly improve Olympiad scores? Today, I will bring you the method of Mathematics Olympiad in primary school. 1.

Pay attention to what other students have to say. Some students think they know when others speak, but they don't listen to it; In fact, there may be different methods for the same question, and other people's ideas may be better than yours, so you should listen carefully; 2.About Assignments:

After each special class, you should read the example questions again, not only to read, but also to think carefully. The handouts are all classic examples, and the methods are very good. Therefore, after going back, it is still necessary to review it in time, strike while the iron is hot, recall every link emphasized by the teacher, and summarize and accumulate key question types and solution methods in a timely manner.

3.Strive to overcome carelessness in learning: Developing good study habits is not only a necessary condition for our current learning process, but also can benefit us for life.

Treat every question, no matter how simple and easy, we must pay attention to it, do it seriously, don't take it lightly, don't think that this question is simple, and write the answer easily, which is easy to make mistakes. 4.As for correcting mistakes, you must correct them in time after the teacher has judged the homework, re-consolidate the knowledge, and solve the problem, so that you can make faster progress.

If you don't correct the wrong questions, the teacher will give you the homework and lose the role of checking and promoting, and your problems will still not be solved. Primary School Mathematics Olympiad Methods 2 Primary School Mathematics Olympiad Methods.

One. 1. Wrong questions help me improve quickly: During the exam, I must carefully review the questions, grasp the key conditions of the questions, sort out the clues, and consider comprehensively. Some of the topics are devoted to this aspect.

2. Falling** getting up: The reason for the above problems is that there are some deficiencies in the mastery of knowledge, and it is necessary to check and fill in the gaps in a targeted manner, and there can be no blind spots in knowledge. This is also a test of whether a person has the courage to face difficulties and challenge the spirit of not admitting defeat.

3. There are many benefits of induction and summarization: we must learn to destroy the first summary and induction, which is especially convenient for solving problems. Not only the method of problem solving, but also for some important example problems, representative, we must understand it and turn it into our own knowledge, so that we will not get the problem without ideas, and we can form an organized Olympiad thinking.

Fourth, comprehensive practice is the key: when teaching a topic, many students can solve a test question quickly when placed in this topic, even if it is difficult. But when it comes to a set of comprehensive test questions, it's often impossible to get started; Even the problems that are easy to solve in the usual homework, but there are many mistakes in the exam.

Remind everyone that it is best to do more comprehensive exercises.

Extraction Code: G8NY Students' thinking should play an important role in the process of learning mathematics. Thinking is formed on the basis of learning mathematical knowledge and mastering methods, and is the result of the interaction between mathematical knowledge and students' subjective cognition.

Thinking training has become an important part of current mathematics teaching. In order for students to acquire mathematical thinking ability, it is necessary to use students' existing mathematical concepts as the basis, use students' existing mathematical knowledge, flexibly deal with new problems, and understand mathematical objects and master new knowledge through mathematical judgment and reasoning.

The sum of odd factors is at least: 1 + 3 + 5 + 15 = 24 The sum of the even factors of this number is: at least 2 + 6 + 10 + 30 = 48 and then add 1 factor 2, and the sum of even factors increases:

So there are two factors 2