Generally speaking, there are two kinds of mathematical errors, one is calculation error and the other is thinking error. The former is easy to correct, and the latter is complicated, which may be caused by unclear concepts or other reasons. Most primary school mistakes are calculation errors.

Therefore, the way to prevent mistakes is to do more questions, do more serious questions, clarify concepts and definitions, and cultivate good mathematical cultivation. The so-called mathematical accomplishment refers to how to express the concept written in words in a mathematical way.

Specifically, do more questions, check one question after completing it, instead of being+,and the result is regarded as-