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前面已介绍了整数四则运算的定义、定律、法则和性质等知识,本篇主要讨论小数、分数四则运算中的一些问题。在讨论这些问题前,我们首先要知道:分数、小数四则运算的含义与整数四则运算的含义实质上是相同的。因此,有关整数四则运算的一些定律、性质,在分数、小数四则运算中一概成立,当然也可运用这些性质进行简便运算。下面主要讨论三个问题:
In front of the introduction has been the definition of four integer arithmetic, law, law and nature of knowledge, this article discusses the decimal, fractional four arithmetic problems. Before discussing these issues, we must first know that: the meaning of fractional, fractional four operations and integer four operations are essentially the same meaning. Therefore, some laws and properties concerning the four arithmetic operations of an integer are generally established in the four arithmetic operations of fractions and decimals. Of course, these laws can also be used for simple calculations. The following three topics are discussed: