1、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,*,小数的意义,人教版版四年级数学下册,教学目标,本节课我们主要来学习小数的意义,同学们要理解小数的意义,能够正确的进行计算。,1,10,1,1000,填空,1,分米是 米,就是()米。,1,厘米是 米,就是()米,1,毫米是 米,就是()米,1,10,1,100,1,1000,0.1,0.01,0.001,1,角 是 元,用小数表示是
2、元,2,分是 元,用小数表示是()元,2,角,5,分是 元。用小数表示是()元,1,10,2,100,25,100,0.1,0.02,0.25,每盒螺丝是,12,元,7,角,8,分,用元做单位是()元。,12.78,小数点,小数部分,十分位,十分之一,数 位,计数单位,百分之一,百分位,千分位,千分之一,万分位,万分之一,整数部分,个位,一(个),十位,十,百位,百,千位,千,0.1,0.01,0.001,0.0001,相邻两个计数单位之间的进率都是,10,602.483,里面有,6,个()、有,2,个()、有,4,个()、()个,0.01,、有,3,个()。,百,一,0.1,8,0.00
3、1,10,里面有()个一,1,里面有()个,0.1,0.1,里面有()个,0.01,0.01,里面有()个,0.001,0.7,里面有()个,0.07,0.2,里面有()个,0.01,30,个,0.01,是(),50,个()是,0.5,10,10,10,10,10,20,0.3,0.01,0.175,是由,1,个()、,7,个(),和()个,0.001,组成的。,0.1,0.01,5,读出下面的小数,2.5,读作:,0.085,读作:,340.09,读作:,二点五,零点零八五,三百四十点零九,0,1,把,0,到,1,这长的线段看作,1,的整体,平均分成,10,分,每一分是 ,写成小数是,0.1,1,10,0.3,0.8,0.7,0.1,0,1,2,3,0.6,1.4,2.1,2.9,0.9,2.5,3.2,你学会了吗?,本节课学的内容,你理解了吗?同学之间互相讨论一下!,