Most students must have encountered problems when doing math problems, and they will also encounter problems that they are familiar with but can't think of the answers. This is why they can't remember the basic knowledge well. Then in this case, you can't ignore it, you have to rely on yourself. But this often requires skill, and it is possible to score with regular questions.

First of all, let's understand how the answers to the multiple-choice questions in mathematics in the college entrance examination come out. Generally speaking, it is changed or modified on the basis of a correct answer. Of course, there is also an error-prone point in the topic, and the options pointed out according to the error-prone point are mainly these two kinds.

Interval method

This method, also called exclusion method, relies on roughly calculated data or guesses some data when answering multiple-choice questions in college entrance examination mathematics. For example, how many angles are given to a topic, 30 and 90. Obviously, the answer must be 90 30 degrees, 120 plus or minus 30 degrees. Or some answers related to 30, 60 or 90 degrees.

ratio method

Proportional method is a simple rogue method for multiple-choice questions in mathematics in college entrance examination. If you encounter graphics problems, mark the known first, measure the unknown with a protractor, and then it is time to witness the miracle! ! ! The ruler measures the proportional relationship between two solid lines, and then the length of that side can be obtained by approximately estimating the ratio through the known edge.

The skill code of mathematical problems is 1. If the answer has a radical symbol, don't choose it.

2. If the answer is 1, please select.

3. When all three answers are yes, choose the right one.

4. When one is positive X and the other is negative X, choose one of them.

5. If the question looks simple, the answer will be complicated, and vice versa.

6. What to choose in the previous question and what to choose in this question, three consecutive identical ones, are not suitable for this article.

7. A good answer depends on your eyes.

8. when none of the above is practical, choose B.