青岛版四年下小数的意义课件.ppt

小数的意义,青岛版四年级数学下册,学习目标,本节课我们主要来学习小数的意义，同学们结合实际的例子理解并掌握小数在生活中的应用，理解小数的含义，能够用小数表示日常生活中一些常见的数。,0.1,0.3,0.5,一位小数,0.01,0.25,0.03,二位小数,0.001,0.365,三位小数,0.1 0.3 0.5,0.001 0.365,0.01 0.03 0.25,用来表示十分之几,百分之几,千分之几的数，叫做小数。,0.3,0.45,0.238,0.3里面有()个,0.5里面有()个,0.07里面有()个,0.09里面有()个,计数单位:,0.01,0.001,5,3,7,9,记作:,百分之一,千分之一,十分之一,0.1,0.314,0.43,0.5,0.025,连一连,0.7里面有()个0.1；（）里面有7个0.01.,8个()是0.8；10个0.1是（）.,0.497是由()个0.1；()个0.01和()个0.001组成.,7,0.07,0.1,1,4,9,7,