The essence of a big tree lies in its foundation. The roots of big trees provide sufficient nutrients and supplies for the whole trunk and branches, just like the basic concepts, laws and formulas that students are most likely to ignore when checking. So we must pay attention to the basic concepts. Why do the basic concepts of mathematics occupy such an important position in the process of learning mathematics? Because many times students are prone to make small mistakes when solving problems, but they can't find it after checking it several times. So, if you want to get a score in math, you should complete the first step of the test paper. When checking the basic questions, we should read the questions carefully and return to the definition of concepts, so as to suit the remedy to the case.

Method 2: Symmetry

The condition of symmetry will inevitably lead to the symmetry of the conclusion, and the answer can be quickly tested by using this symmetry principle. Find more ways to learn mathematics, not only to find a suitable learning method, but also to be good at simplifying the complex, to achieve the purpose of efficient learning, so as to quickly grade mathematics.

Method 3: Invariant test

In the process of the change and deformation of some mathematical problems, some quantities are unchanged, such as the shape and size of the graph are unchanged when the graph is translated, rotated and folded, and the basic quantities are unchanged. Using the invariants in this changing process, we can directly verify the correctness of some answers.

Method 4: Special case test

Generally speaking, it is not an easy task to achieve math scores in a short time. In the process of learning, you will encounter some special problems. In fact, the special situation of the problem is often easier to solve than the general situation, so it is a very quick way to test the answer through special values and special situations.

Method 5: Inverse derivation of the answer.

I believe many students will use this method. After finding the answer to the question, they can replace the answer back to the question and test whether the conditions of the question are still valid. But we must pay attention to this method and think about whether there may be multiple solutions.

In short, in order to improve the frequency and efficiency of inspection and avoid boring repetition, it is necessary to solve multiple problems.