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简算是学生喜爱的一种运算,但简算的方法学生普遍掌握不好,其原因就是简算的方法太多、太灵活,涉及许多概念及运算的技巧,容易使学生产生混淆,无所适从,因此造成了许多学生不顾简算的依据及运算的合理性而进行盲目凑整的乱简
The simple calculation is a favorite of students. However, the simple method is generally not good for students. The reason is that there are too many simple methods and too flexible. Many concepts and calculation skills are involved. Students are confused and confused. Therefore, Has caused many students to ignore the simple basis and the rationality of the operation of the blind rounding of the chaos