苏教版二年级下册数学第一单元复习《有余数的除法范文

他身背三角架，手拎仪器箱，每天起早贪黑，晴天一身汗，雨天一身泥，晚上记录复核到深夜geographiclocationYibincityislocatedinbeautifulrichofabundance--SichuanbasinSouthmargin,islocatedinn103°39'-105°20',latitude27°49'-29°16'Zhijian;YibinEastand,Luzhoucity,adjacent;Northandzigongcitydevelopment12thafiveyearsplanningplatformforintoYucityintertracknetworkplanning(2011-2030)nationalandplaceofrelatedplanning,andpolicyYibinCitytourismdevelopmentplanningYibincityeasecityholdblockingspecialplanningYibincityrelatedtabletsdistrictcontrolsexdetailedplanningYibincitypublictrafficdevelopmentplanningYibincitylandusinggeneralplanningYibincityindustrialconcentrateddistrictlayoutplanning1.4planningbackgroundYibincityinsandsRiver,andminjiangRiverandYangtzeRiverofSanjiangintersectionat,isChinafamousofwineare,belongstochuan,andYunnan,andGuizhouthreeprovincecombinedDepartmentarea,knownasYangtzeRiverCity,said,isinpanxi-liupanshuiimportantpartoftheresource-richregion.Inthenewmasterplan,asthenationalhistoricalandculturalcityinYibincity,China,DepartmentofSichuan-Yunnan-Guizhou-basedregionalcenterintheupperreachesCountiesare:Yibin,andJiang'an,andchangningCounty,andGaoPingshanCounty,xingwenjunlian,andGong,and,and,and.2.1-2administrativemapofYibin,Yibincity,endof2014thecity'stotalpopulationof5.5429millionpeople,residentpopulationof825,000peopleintheCenter.2.1.3socialeconomicdevelopmentinYibincity,2014toachieveGDPof144.381billionyuan,anincreaseof8%,keepingthetotalprovince-4thplace;localpublicbudgetincomeof10.56billionyuan,ranking4thplace,above-scaleindustrialaddedvalueof78.716billionyuan,ranking3rdinsocialretailsalesofconsumergoodstotaled56.169billionyuan,ranking4thin24990Yuanofdisposableincomepercapitaofurbanresidents,percapitanetincomeoffarmers9831,Share12314.5:60.0:25.5.Wine-makingindustry,苏教版二年级下册数学第一单元复习《有余数的除法》知识点归纳：1、体会有余数除法的意义。2、积累正确的试商方法。3、能用竖式正确计算有余数除法，了解余数一定要比除数小。4、能运用有余数除法的知识解决一些简单的实际问题。错题分析：1、列竖式计算错点：①算式上得数忘记写；②得数只写了商，没有写余数；③余数比除数大了。纠错：牢记易错点，养成好的计算习惯，学会检查。有余数的除法检查方法：①除数×商+余数=被除数；②余数一定要比除数小。上述两点必须同时满足，缺一不可。2、□÷□=□（朵）……□（朵）□÷□=□（束）……□（朵）错点：小朋友往往忽视这两道题中单位名称的不同，两道除法算式不是随意写的哦。纠错：拿到这类对比题，请观察不同之处，把不同之处圈一圈，就不易上当了。3、在○里填上“＞”、“＜”或“＝”24÷8○14÷424÷6○14÷4错点：小朋友认为这两道算式的商都是3，那么就是相等的纠错：14÷4=3……2，表示14里面最多有3个4，但是比3个4多点，比4个4少点，所以14÷4比3大，但是比4小。总结方法：如果商一样大，比较余数，余数大的则大；如果商不一样大，则他身背三角架，手拎仪器箱，每天起早贪黑，晴天一身汗，雨天一身泥，晚上记录复核到深夜geographiclocationYibincityislocatedinbeautifulrichofabundance--SichuanbasinSouthmargin,islocatedinn103°39'-105°20',latitude27°49'-29°16'Zhijian;YibinEastand,Luzhoucity,adjacent;Northandzigongcitydevelopment12thafiveyearsplanningplatformforintoYucityintertracknetworkplanning(2011-2030)nationalandplaceofrelatedplanning,andpolicyYibinCitytourismdevelopmentplanningYibincityeasecityholdblockingspecialplanningYibincityrelatedtabletsdistrictcontrolsexdetailedplanningYibincitypublictrafficdevelopmentplanningYibincitylandusinggeneralplanningYibincityindustrialconcentrateddistrictlayoutplanning1.4planningbackgroundYibincityinsandsRiver,andminjiangRiverandYangtzeRiverofSanjiangintersectionat,isChinafamousofwineare,belongstochuan,andYunnan,andGuizhouthreeprovincecombinedDepartmentarea,knownasYangtzeRiverCity,said,isinpanxi-liupanshuiimportantpartoftheresource-richregion.Inthenewmasterplan,asthenationalhistoricalandculturalcityinYibincity,China,DepartmentofSichuan-Yunnan-Guizhou-basedregionalcenterintheupperreachesCountiesare:Yibin,andJiang'an,andchangningCounty,andGaoPingshanCounty,xingwenjunlian,andGong,and,and,and.2.1-2administrativemapofYibin,Yibincity,endof2014thecity'stotalpopulationof5.5429millionpeople,residentpopulationof825,000peopleintheCenter.2.1.3socialeconomicdevelopmentinYibincity,2014toachieveGDPof144.381billionyuan,anincreaseof8%,keepingthetotalprovince-4thplace;localpublicbudgetincomeof10.56billionyuan,ranking4thplace,above-scaleindustrialaddedvalueof78.716billionyuan,ranking3rdinsocialretailsalesofconsumergoodstotaled56.169billionyuan,ranking4thin24990Yuanofdisposableincomepercapitaofurbanresidents,percapitanetincomeoffarmers9831,Share12314.5:60.0:25.5.Wine-makingindustry,商大的就大，不用看余数了。4、□÷6=□……□余数可以是哪些数？（）错点：1，2，3，4，5，6，7，8，9甚至加了……纠错：余数一定要比除数小，此题中，余数比6小，那么可以是1,2,3,4,5。注意0不可以哦，因为剩余0就是没有剩余即没有余数。之后遇到此类题，看到余数就想到除数，看到除数就想到余数，牢记除数和余数的关系，余数一定比除数小，反之，除数一定比余数大。变式①□÷6=□……□余数最大可以填几？余数最小可以填几？变式②□÷□=□……6除数可以是哪些数？除数最小是几？（注：除数没有最大，不信请小朋友举出最大，我总可以找到比小朋友举出的大的数，比如在他基础上＋1）变式③□÷3=4……□有几种不同的填法错点：填的余数不是比3小。纠错：牢记除数和余数的关系，余数一定比除数小，反之，除数一定比余数大。这里根据余数的有序性可以把这些算式有序的全部写出来，即余数分别是1,2的情况，那么被除数怎么求呢？被除数=除数×商+余数，比如余数是1的情况（□÷3=4……1），即3×4+1=13。变式④□÷□=4……2有几种不同的填法错点：填的除数不比2大，比如：2、1。纠错：牢记除数和余数的关系，余数一定比除数小，反之，除数一定比余数大。这里根据除数的有序性可以把这些算式有序的全部写出来，即除数分别是3、4、5、6、7、8、9（还可以是10、11、12……，有无数种不同的填发，但目前小朋友还未涉及到两位数乘法，只是有必要知道下）的情况，那么被除数怎么求呢？被除数=除数×商+余数，比如除数是2的情况（□÷2=4……1），即2×4+1=9。5、有一些苹果，不到20个，平均分给6个同学或者平均分给4个同学，都剩下2个，想一想，有（）个苹果。错点：小朋友无从下手纠错：目前为止可教小朋友用举例的方法找出20以内分别符合这两个条件（①÷6余数是2；②÷4余数也是2）的数（可从19,18,17，……，8，从大到小比较好找），在从中找出两个条件都符合的那个数也就是14。他身背三角架，手拎仪器箱，每天起早贪黑，晴天一身汗，雨天一身泥，晚上记录复核到深夜geographiclocationYibincityislocatedinbeautifulrichofabundance--SichuanbasinSouthmargin,islocatedinn103°39'-105°20',latitude27°49'-29°16'Zhijian