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在进行有理数的加减、乘除、乘方混合运算时,许多同学认为运算法则不难掌握,但计算结果却很容易出错.这主要是因为没有注意总结其中的运算技巧所致,解题过程中步骤多、计算量大,稍不小心错个符号,就会全盘皆输,所以掌握有理数的运算技巧是很有必要的.下面给同学们介绍几种方法,希望平时学习一定要注意体会和应用.
In the process of adding, subtracting, multiplying, and multiplying rational numbers, many students believe that the algorithm is not difficult to master, but the calculation results are very easy to make mistakes. This is mainly due to the lack of attention to summarizing the computational skills involved in the problem solving process. There are many steps and large amount of calculations. If you accidentally misplace a symbol, you will lose it all. Therefore, it is necessary to grasp the arithmetic skills of rational numbers. Here are some methods for classmates. We hope that you must pay attention to the experience and application of peacetime learning. .