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1、3.2.1口算除法(一)班级姓名【学习目标】1.会理解一位数除整十、整百、整千的数的口算方法。2.学会正确、熟练地进行计算。【学习过程】一、知识铺垫彩色手工纸每沓10张,每盒100张。把60张彩色手工纸平均分给3人,每人得到多少张?每人得到多少张?二、自主探究(1)(2)尝试解答。我是用分小棒的方法:把60平均分成3份,每份是20。(3)你用哪种方法进行口算。我是这样想的:()×3=60,60÷3=()6÷3=2,所以60÷3=().说说你的收获吧?三.课堂达标1.口算:80÷2=30÷3=400÷4=800÷2=40÷4=500÷5=900÷3=8000÷4=otherstaffof
2、theCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesM
3、inister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand2.列式并写得数。(1)9000除以3,商是多少?(2)400除以4,商是多少?(3)80里面有多少个4?3.一辆汽车2小时行了80千米,平均每小时行多少千米?四、知识拓展4.小丽和王平进行跳绳比赛。小丽说:我4分钟跳了400下。王平说:我3分钟跳了600下。谁跳得快?每分钟快多少下?【学习评价】自评师评otherstaf
4、foftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterpris
5、esMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand3.2.2口算除法(二)班级姓名【学习目标】1.能掌握几百几十和几十几除以一位数的口算方法。2.能正确地进行计算,养成正确计算的良好习惯。【学习过程】一、知识铺垫1.口算。80÷4=800÷4=8000÷4=你能说出口算方法吗?二、自主探究1.3个班上手工课一共用去120张彩色手工纸,平均每班用了多少张?(1)列式:
6、(2)在小组内交流一下,说一说自己的想法吧。你是怎么计算的?12个十除以3是()个十,就是()。(3)计算15÷5=240÷6=150÷5=2400÷6=2.把66张彩色手工纸平均分给3个人,每人得到多少张?(1)列式:这道题又是怎么计算的?说说你的想法。(2)(3)计算90÷3=46÷2=96÷3=64÷2=otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin
7、1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypar