小数的产生和意义于小红

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,小数的产生和意义,1,1,分米,2 3 4 5 6 7 8 9 10,把一米平均分成10份。,一位小数,1分米,米,0.1米,3分米,米,0.3米,7分米,米,0.7米,1米,2,1,厘米,2 3 4 5 6 7 8 9 10,0 10 20 30 40 50 60 70 80 90,把一米平均分成100份。,两位小数,米,0.01米,米,米,0.03米,0.06米,3,把1米平均分成1000份。,0,1厘米,0.001米,三位小数,0.006,米,米,米,0.013,米,0,1厘米,米,4,0.01,0.03,0.12,12,100,1,100,3,100,0.001,0.006,0.013,13,1000,1,1000,6,1000,一位小数,两位小数,三位小数,0.1,0.3,0.7,7,10,1,10,3,10,分母是10、100、1000的分数可以用小数表示,5,做一做,分数：,小数：,.,.7,.32,6,0.3里面有（）个,0.5里面有（）个,1,10,1,10,小数的计数单位是,智慧关：第一关,填一填：,1,100,.里面有（）个,.里面有（）个,1,100,十分之一,百分之一,千分之一,0.1,0.01,0.001,分别写作,7,每 两个计数单位之间的进率是（ ）。,0.1米里面有（ ）个0.01米。,0.01米里面有（ ）个0.001米。,智慧关：第二关,10,10,10,0.1,0.01,0.001,(10),(10),相邻,8,找朋友,第三关：,0.047,0.13,0.0001,0.9,9,填空:,0.8里面有( )个0.1,0.32里面有( )个0.01,8,32,10,天才,=,的灵感,的勤奋,+,11,实践作业：找一找生活中的小数,关于长度方面的：,关于价钱方面的：,关于重量方面的：,关于成绩方面的：,如身高1.71米；,小数在我们生活当中无处不在！,12,