五上5.7小数乘小数(二)市名师优质课比赛一等奖市公开课获奖课件.pptx

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,*,小数乘小数2,第1页,一、连线。,0.670.13 8.567.9,5.545.2 6.70.013,85.60.79 0.55452,第2页,因数,28,2.8,0.28,2.8,0.28,因数,45,4.5,4.5,0.45,0.45,积,1260,填表,:,12.6,1.26,1.26,?,0.280.45,积是几位小数,?,在哪里点小数点,?,整数部分没有怎么办,?,0.126,第3页,第4页,0.280.28=,积里点小数点时，位数不够，怎么办？,注意：在积里点小数点时，位数不够，要在前面用,0,不足。,0,0,0,.,0,784,第5页,1、你能给下面各题积点上小数点吗？,0.7 1.05 0.18,0.9,0.06,0.3,6 3 6 30,5 4,0,0,0,0,0,第6页,2.算出例2中几个家俱占地面积各是多少平方米。,第7页,直接写得数,:,0.20.2=,0.30.3=,0.4 0.4=0.60.6=,0.80.5=,0.010.01=,0.030.02=,0.070.07=,0.04,0.09,0.16,0.36,0.40,0.0001,0.0006,0.0049,第8页,7.2,0.72,7.2,7.2,0.072,4,、,第9页,找规律填得数：,0.30.3=,0.330.33=,0.3330.333=,0.33330.3333=,0.333330.33333=,0.09,0.1089,0.110889,0.11108889,0.1111088889,第10页,一个修路队修一条公路。第一天修23.5米，第二天修是第一天1.4倍。,（1）两天一共修路多少米？,（2）第二天比第一天多修路多少米？,第11页,