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进行有理数的计算时,除了按照常规的运算顺序外,我们还可以根据题目所给数据的特点,巧妙选择计算方法,这样可以大大提高运算速度和准确率.本文举几例给以说明.方法一分组法例1计算
In addition to the usual order of operations, we can also choose the calculation method wisely according to the characteristics of the data given by the subject, which can greatly improve the speed and accuracy of the calculation. This article gives a few examples to illustrate. Sub-group 1 calculation