小数的产生和意义(教育精品)

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,*,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,人教版小学数学四年级下册第四单元第一课时,2.26,米,我的,50,米赛跑成绩是,7.98,秒。,我的身高是,1.41,米。,我的体重是,39.4,千克。,你的体温是,38.2,0,C,，发烧了。,0.90,元,2.85,元,5.98,元,把,1,米平均分成,10,份。,1,分米,1,10,米,0.1,米,3,分米,3,10,米,0.3,米,7,分米,7,10,米,0.7,米,一位小数,十分之几,把,1,米平均分成,100,份。,1,厘米,1,100,米,0.01,米,两位小数,3,厘米,3,100,米,0.03,米,6,厘米,6,100,米,0.06,米,百分之几,把,1,米平均分成,1000,份。,1,毫米,1,1000,米,0.001,米,三位小数,6,毫米,6,1000,米,0.006,米,13,毫米,13,1000,米,0.013,米,千分之几,1,10,0.1,3,10,0.3,7,10,0.7,一位小数,两位小数,三位小数,1,100,0.01,3,100,0.03,6,100,0.06,1,1000,0.001,6,1000,0.006,13,1000,0.013,分母是,10,、,100,、,1000,的分数,可以用小数来表示。,十分之几,百分之几,千分之几,分数,:_,小数,:_,分数,:_,小数,:_,分数,:_,小数,:_,1,、看图填空。,0.6,0.7,0.35,0.6=,(),6,0.87=,(),87,=(),1000,48,=(),100,15,2,、在,(),里填上合适的数。,0.15,10,100,0.048,勇闯三关,十分之一,百分之一,千分之一,0.1,0.01,0.001,小数的计数单位是：,分别写作,:,0.3,里面有（）个,0.5,里面有（）个,0.07,里面有（）个,0.19,里面有,(),个,3,5,7,19,第一关,小数每相邻两个单位间的进率是,。,10,下面的括号里能填几？,0.1,米里面有（）,0.01,米；,0.01,米里面有（）,0.001,米。,10,10,0.1,0.01,0.001,10,10,第二关,那两只手套是一副？用线连起来。,第三关,想一想,说一说,:,你在这一节课里有什么收获或有什么遗憾,?,有什么发现或想到了什么,?,