西师大版四年级下册数学第五单元 第5单元小数 知识点.docx

第5单元总结 智慧小锦囊 小数的意义 1角110元0.1元 3厘米3100米0.03米 5毫米51000米0.005米 像0.1,0.03,0.005用来表示十分之几、百分之几、千分之几的数,就是小数;小数的计数单位有0.1,0.01,0.001相邻两个计数单...