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对于较大或较小的数,用科学计数法表示较为简便,对该知识点的考查往往会结合经济、时政方面的热点。然而,同学们对科学计数法、近似数与有效数字概念较为模糊,导致在考试过程解答有关科学计数方面的问题时中客易出错。下面就同学们在利用科学技术法的过程中常出现的错误举例分析如下:一、忽视a×10n中a的取值范围致错例1“十二五”期间,将新建保障性住房36000000套,
For larger or smaller numbers, it is easier to express by scientific notation, and the examination of this knowledge point often combines with the hot spots in economy and politics. However, students were vague about the concepts of scientific counting, approximations and significant figures, which led to errors in the examination process when answering questions on scientific counts. Below on the students in the use of science and technology in the process of error examples often appear as follows: First, ignore the value range of a × 10n in a wrong example 1 “Twelve Five ” period, the new affordable housing 36000000 set,