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How can the method of 2022 college entrance examination math puzzle be correct?
Mathematical problems can be solved by method of substitution, and method of substitution often gives some conditions, such as A is greater than or equal to 0 and less than or equal to 1. B is greater than or equal to 1 and less than or equal to 2. Considering some special circumstances, it may be complicated for you to find some formulas for combining ab. But if it is a multiple-choice question, you can try a=0.5 and b= 1.5. There is also a formula that can bring the answers in the options to the questions for calculation. Backward method!

The skills of mathematics in college entrance examination are short and long, short and short, and B and C are invincible. Choose c for the same length and b for the same short length. If it's an image problem, which is more likely to get B or C!

First of all, make it clear that the problem can't be pure, and you must have the effect of seeing the problem after reading it.

If you can't do it after reading the question, look at the options first, some can be excluded, and then analyze according to the conditions of the question, and some options may be excluded, which will be much easier.

If you can't rule out any of them, then consider the option. If there is an answer about extracurricular (which rarely appears in class), it is probably that.

If the number of options is 4, usually the second largest option is the correct option.

Looking at the options alone, there are generally more BD and less A.

One more thing, don't change it unless you are more than 90% sure.

The Relationship between "Doing" and "Scoring" in Math Answering Skills of College Entrance Examination

To turn your problem-solving strategy into a fractional point, it is mainly expressed in accurate and complete mathematical language, which is often ignored by some candidates. Therefore, there are a lot of "yes but no" and "yes but incomplete" situations on the test paper, and the candidates' own evaluation scores are far from the actual scores. For example, many people lost more than 1/3 points because of "jumping questions" in solid geometry argument, and "substituting proof with pictures" in algebraic argument scored poorly because it was not good at accurately transforming "graphic language" into "written language". Another example is the image transformation of trigonometric function in 17 last year. Many candidates are "confident" but not clear, and the points deducted are not a few points. Only by paying attention to the language expression of the problem-solving process can we grade the "can do" questions.