三位数除以一位数商中间有零的除法市公开课一等奖省赛课微课金奖课件.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,*,*,商中间有0的除法,第1页,4,分钟生产,果汁,428,瓶。,2,小时生产果,脯,(f),204,千克。,平均每分钟生产多少瓶果汁？,平均每小时生产多少千克果脯？,第2页,4,分钟生产果汁,428,瓶，,平均每分钟生产多少瓶果汁？,4284,第3页,4 2 8,4,4,个百平均分成,4,份，每份是,1,个一百。,1,4,2,0,0,2,8,7,2,8,0,2,个十平均分成,4,份，每份不够,1,个十就在十位上商,0,把,2,个十和,8,个一合起来，平均分成,4,份，每份是,7,个一。,合作探索,第4页,3,小时生产果脯,309,千克,平均每小时生产多少千克果脯？,3093=,第5页,2,0,4,2,4,0,8,8,8,0,4,1,3,6,3,4,0,8,0,9,0,3,1,8,1,8,1,算一算：,2,6,3,3,1,8,3,2,0,6,6,1,6,1,6,6,3,6,1,0,6,6,6,0,6,3,3,6,第6页,2,0,4,2,4,0,8,8,8,0,4,1,3,6,3,4,0,8,0,9,0,3,1,8,1,8,1,算一算：,第7页,2,0,4,2,4,0,8,8,8,0,4,1,3,6,3,4,0,8,0,9,0,3,1,8,1,8,1,算一算：,2,6,3,3,1,8,3,2,0,6,6,1,6,1,6,6,3,6,1,0,6,6,6,0,6,3,3,6,第8页,2,0,4,2,4,0,8,8,8,0,4,1,3,6,3,4,0,8,0,9,0,3,1,8,1,8,1,算一算：,2,6,3,3,1,8,3,2,0,6,6,1,6,1,6,6,3,6,1,0,6,6,6,0,6,3,3,6,第9页,5 5,5,0,1,动动脑：,要使商中间是,0,，可能是几？,第10页,5 5,5,0,1,1,0,动动脑：,5,0,5,5,10,5,5,0,5,1,第11页,5 5,5,0,1,3,1,动动脑：,505,5,101,5,5,5,5,0,5,5,101,5,5,0,5,1,5,5,10,5,1,15,0,5,3,第12页,5 5,5,0,1,5,2,动动脑：,505,5,101,5,5,5,5,0,5,5,101,5,5,0,5,1,5,5,103,5,15,15,0,5,2,5,5,10,5,2,25,0,5,5,第13页,5 5,5,0,1,7,3,动动脑：,5,2,5,0,5,105,5,25,25,505,5,101,5,5,5,5,0,5,5,101,5,5,0,5,1,5,5,103,5,15,15,0,5,3,5,5,10,5,3,35,0,5,7,第14页,5 5,5,0,1,9,4,动动脑：,0,5,5,3,5,107,5,35,35,505,5,101,5,5,5,5,0,5,5,101,5,5,0,5,1,5,5,103,5,15,15,0,5,4,5,5,10,5,4,45,0,5,9,5,2,5,0,5,105,5,25,25,第15页,5 5,5,动动脑：,0,1,5,5,4,5,109,5,45,0,45,0,5,5,3,5,107,5,35,35,5,2,5,0,5,105,5,25,25,505,5,101,5,5,5,5,0,5,5,101,5,5,0,5,1,5,5,103,5,15,15,0,第16页,三位数除以一位数,（商中间有,0,）,估算,为何这么算？,怎么算？,从,最高位,除起，除到被除数,哪一位,，商就写在哪一位上面，,不够商,1,，就商,0.,4284=,策略,第17页,你们真棒！,第18页,