1四下小数的产生和意义

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,生活中的小数。,1.6,千克,36.95,元,2.26,米,0,1,米,（）分米,（）米,（）分米,（）米,3,0.3,7,0.7,把,1,米平均分成,10,份,把,1,米平均分成,10,份，表示这样的,1,份就是,0.1,米,。,（）分米,1,（）米,（）米,0.1,（）米,（）米,0.9,米,0.3,里面有（）个,0.1,。,0.7,里面有（）个,0.1,。,0.9,里面有（）个,0.1,。,3,7,9,0.8,0.6,8,个,0.1,是（）。,6,个,0.1,是（）。,35,返回,用分数表示 用小数表示,1,厘米,=,（）米,=,（）米。,（）厘米,=,（）米,=,（）米。,（）厘米,=,（）米,=,（）米。,思考：,这些小数分别表示什么意义？分数与小数有什么联系？,这些小数的计数单位是（）。,把,1,米平均分成,100,份，每一份是（）厘米。,0,1,米,10,20,30,40,50,60,70,80,90,0,10,1,厘米,2,3,4,5,6,7,8,9,1,1,100,0.01,3,3,100,0.03,35,100,0.35,百分之一,10,个,0.001,是（）。,0.01,里面有（）个,0.001,。,0.010,0.01,10,一、做一做,分数：,小数：,6,10,0.6,7,10,0.7,35,100,0.35,8,10,8,100,71,1000,71,100,6,10000,0.71,0.071,0.8,0.006,0.08,0.0006,二、连一连,三、填一填,0.8,里面有（）个 。,0.32,里面有（）个,0.01,。,12,个,0.001,是（）。,15,个,(),是,0.15,。,1,里面有（）个,0.001,。,1.685,里面有（）个,0.001,。,1,10,0.012,32,0.01,1000,8,1685,1.685=1+0.685,1,里面有,1000,个,0.001,0.685,里面有,685,个,0.001,成功等于百分之一的灵感加百分之九十九的汗水。,