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计算是小学数学的基础,而简便运算是对学生逻辑思维能力培养的有效手段,它运用了运算定律与数学的基本性质,使一些复杂的算式很容易通过口算就能得出结果,从而使运算简便。加法交换律、结合律,乘法交换律、结合律和分配律,除法的运算性质,减法的运算性质等,很多技巧与方法都贯穿融合在简便计算中,学生要想灵活运用,提高运算速度和准确率,需要培养良好的解题习惯以及对简便算法的充分理解与练习巩固。
Computation is the basis of elementary mathematics, and simple arithmetic is an effective means to train students’ logical thinking ability. It uses the basic properties of arithmetic law and mathematics, so that some complicated arithmetic formulas can easily obtain the result through calculating, so that computing Easy. Addition exchange law, combination law, multiplication exchange law, combination law and distribution law, the nature of the operation of the division, the nature of the operation of the subtraction, many skills and methods are run through the integration of simple calculation, students want to be flexible and improve the speed and Accuracy, need to develop good problem-solving habits and simple algorithm to fully understand and practice consolidation.