孔子曰:“知之者莫如好之者,好之者莫如乐知者。”了解一个或几个数学知识点对于学生来说不难,可是要在解题的关键时刻,熟练地运用知识点解题就有相当的难度了。在乘法的运算定律中,乘法分配律是比较重要的,也是学 Confucius said: “Knowing those who are good, those who do not know who are good.” "Understanding one or several mathematical knowledge points is not difficult for students, but at the crucial moment of problem solving, skilled use of knowledge There are quite a few difficult points to solve. In the law of multiplication arithmetic, the law of multiplication distribution is more important, but also learning