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本文就“数的开方”与“四边形”作业中常见错误举例剖析如下: 例1 试比较0.2与0.2的大小. 错解:0.2>0.2. 剖析:错解的原因是没有理解“正的纯小数的算术平方根比它本身大”.
This article analyzes the common mistakes in the “number of square root” and “square” operations as follows: Example 1 Try to compare the size of 0.2 and 0.2. The wrong solution: 0.2>0.2. Analysis: The reason for the misunderstanding is that there is no understanding of “positive pure. The arithmetic square root of a decimal is bigger than itself."