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小学数学第七册小数的期末复习,可依据总复习题的编排,分三个专题组织。在每个专题中,要针对学生实际,抓住关键问题,帮助他们加深对小数概念、性质、法则的理解,进一步熟练有关小数的运算。一、小数的意义和性质小数的意义和性质是小数内容的基础,因此,复习小数必须从小数的的意义和性质着手。首先,应针对学生常把245.245读为二百四十五点二百四十五,混淆整数加减法(末尾对齐)与小数加减法(小数点对齐)的区别等错误,引导他们认真复习小数的数位和单位。可提出这样的问
The seventh grade primary school mathematics final review, can be based on the overall review of the choreography, divided into three topics. In each topic, the students should grasp the key issues according to the actual situation of the students, help them to deepen their understanding of the concept, nature and law of decimals, and further familiarize themselves with the operation of decimals. First, the meaning and nature of decimals The meaning and nature of decimals is the basis of the decimal content, therefore, review the decimal must start with the meaning and nature of the decimal. First of all, students should often read 245.245 as 245.45, confusing the difference between the integer addition and subtraction (end of the alignment) and the addition and subtraction of decimals (alignment of the decimal point) to guide them to carefully review the decimal The number and unit. Can ask such questions