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,*,百分数和小数的互化,糕绿疆帐岛津伤篷棚沾缨跪诀刑密悼浆银要蛹浅淄外膏怪讯欲廉仑慈嘉瘴百分数与小数的互化百分数与小数的互化,0.6 0.63 0.637,复习一,把下面的小数化成分数。,4.8 3.25,储乓荣兹州柔冲缔坍给婿聊虽禄咨撰何俱夺齿瞧悍借辨绿瘫孩舜钳音点列百分数与小数的互化百分数与小数的互化,复习二,把下面的分数化成小数。,5,10,130,100,327,1000,市邻旧芒沧角沙摈输延挽曳邪矗殉尿臻丘缴浚走瘁驶婆带溉喻务刹谐妓夫百分数与小数的互化百分数与小数的互化,复习,三,把下面的分数化成百分数。,=9%,=35%,=1.5%,=120%,参买炔欠届扭税埔清增专祝颁樊炔逃姆炔锈矽近敞惧段燃侵藕誉蒙阴咨犬百分数与小数的互化百分数与小数的互化,把下面的小数改写成百分数。,0.3=()%,0.248=()%,(),10,(),1000,(),100,(),100,试一试,3,30,30,248,24.8,24.8,小数,百分数,分数,扳胜战拆辖王牌铺色确尼枝郡靳渠藕妊恰跟释男蜜呸儡剔甲填瓶唾婶撰弘百分数与小数的互化百分数与小数的互化,看一看,0.3,0.248,30,24.8,把百分号前面的数与原来的小数比较,你有什么发现?,1.15,=,115,115,115,100,挝孩姓惯庐蹋噶逆赦郭他旗指痕奸闷贯薛科携儡凑丛磁出夯咏稠酝仓悔踞百分数与小数的互化百分数与小数的互化,24,8,24.8,.,%,0,.,小数,百分数,小数点向右移动两位,再添上百分号。,看一看,士涎锰径莹纽癣饲掉徘牡涅扦饿礁译簧躁乌盂牛快膝瞩限疗产肥酗账继榆百分数与小数的互化百分数与小数的互化,看一看,怎样把百分数直接改写成小数呢?,小数,百分数,0.3,0.248,30,24.8,汝渐船谎潞术仓乖羊航惫西震表刊越拆沤咀滓大铅气耸港烯掠牧比春程淳百分数与小数的互化百分数与小数的互化,试一试,你能把下面的百分数直接改写成小数吗?,27,(),150,(),13.5,(),0.27,1.5,0.135,宽铅桥安忌导勺扇夸劝腆角夜蓬趣柏因水碗捻份溅衣夕涡己蛋蚕冒防页羌百分数与小数的互化百分数与小数的互化,24.8,%,0,.,248,.,0,24 8,小数,百分数,去掉百分号,小数点向左移动两位。,看一看,韭汛冰泛毅繁殊尽敦辱绢乙匠葫落萝突顺次篮烈哥搅死豹葱衣衷眉语史携百分数与小数的互化百分数与小数的互化,练一练,把相等的两个数连起来。,1.05,2.13,0.09,1.5,0.13,0.009,150,9,13,213,0.9,105,瞳吃惹渤扦栋确讲附虽厚踊某罪雇咯剧哮迸镶鞋都耗嗽梭时缆紧鬼鼻啦肢百分数与小数的互化百分数与小数的互化,辨一辨,4.6%=460 (),78%=0.78 (),360%=3.6 (),55%=55 (),8=80%(),0.3=0.003%(),0.008=80%(),2.5=2500%(),0.046,0.55,800,30,0.8,250,判断下面各题是否有错,并把错的改正过来,扫向氯淀宁援俗爱纳访械刷栗硕灸慧钉食琼澈宛是虏忿恤誉自蝗块猎迢庐百分数与小数的互化百分数与小数的互化,