分数的乘除运算及分数与小数的互化

1、分数的乘除运算及分数与小数的互化一、基础概念分数的乘法两个分数相乘，将分子相乘的积作积的分子，分母相乘的积作积的分母.如果含有带分数，应先把带分数化为假分数.整数与分数相乘，整数与分数的分子的积作积的分子，分母不变.分数的除法1除以一个不为零的数得到的商，叫做这个数的倒数。1qp,0a的倒数是（a）,的倒数是。（0,0）pq,aqp互为倒数的两个数的乘积是1.甲数除以乙数（0除外），等于甲数乘以乙数的倒数。即：mpmq,（0,0,0）npqnqnpb5E2RGbCAP如果含有带分数，先将带分数化为假分数，再运算。分数与小数的互化一个最简分数，如果分母中只含有素因数2和5,再无其他素因数，那么这

2、个分数可化为有限小数，否则就不能化为有限小数。一个小数从小数部分的某一位起，一个数字或几个数字依次不断的重复出现，这个小数叫做循环小数。plEanqFDPw一个循环小数的小数部分中依次不断的重复出现的第一个最少的数字组，叫做这个循环小数的循环节。二、基础练习andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;propertyusingsituation,rentaloruse;referencearoundsimilarpropertyprice

3、,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontainsMinginformation（rightpeople,andlocation,andnature,andterm,anda

4、rea,）andactualcasewhethermatch;landnature;landflatsituation;groundbuildingssituation;referencearoundsimilarlandprice,judgeassessmentvalueofrationality;mortgagerealwhetherhasothermortgagerightornoticeregistrationestablishedprior;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,limitsitua

5、tion.3.otherchattels,ownership,thevalueofthemortgageshouldbeimplemented,andwhetherfactorssuchaseasyhandling.(C)pledgeofcollateralinvestigationprocedures,investigatorsshouldenforcecollateralvalue,conveniencecustodyanddisposition,pledgerightseffectiveidentification,registration,etc.(D)guaranteeinvesti

6、gationtoensurethattheprocedures,theinvestigationshall,inaccordancewiththeborrowersstandardstoinvestigatetheguarantorevaluationassurance.15thinformationauditsurveypeopledealwithborrowersandqualificationprovidedbytheguarantor,financialstatus,proofofidentity,theauthenticityofthedatacarefullyreviewed,ve

7、rified,rationalityandeffectiveness.Include:(a)theborrowerdataauditing1.corporateclientsshouldfocusonassessingvarioustypesoflicenses,certificates,financialreporting,powersofAttorneyandothertextandarealplearelatedinformation.2.smallbusinessclasscustomersalsoshouldfocusonthereviewoftheborrowertoprovide

8、evidenceofbusiness,financialpositionandactualcontrolofcredit,property,andmoreDXDiTa9E3d直接写得数。1125733 X0=义= 345612145rtcrpudgit729414 9X =X =183102561111 = 4 5PCzVD7HxA用简便方法计算:714636( -)X6032272 25 X88272815xHAQX74J0XX12=X =45 XX100=18 X = XX + x 125713713 jLBHrnAILgX(15X )义应用题。（ 一桶油 10 千克，用去这桶油的4/5

9、，用去了多少千克, 12（育民小学有男同学840人，女同学人数是男同学的4/7，这个学校有女同学多少人,3（一堆煤12吨，又运来它的1/4，又运来的煤是多少吨,4（教师公寓有三居室180套，二居室的套数是三居室的2/3，一居室的套数是二居室的1/4。教师公寓有一居室多少套,LDAYtRyKfE5（阳光小学有男生750人，女生人数是男生的4/5，这个学校有女生多少人,一共有学生多少人,andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;proper

10、tyusingsituation,rentaloruse;referencearoundsimilarpropertyprice,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontai

11、nsMinginformation(rightpeople,andlocation,andnature,andterm,andarea,)andactualcasewhethermatch;landnature;landflatsituation;groundbuildingssituation;referencearoundsimilarlandprice,judgeassessmentvalueofrationality;mortgagerealwhetherhasothermortgagerightornoticeregistrationestablishedprior;whethere

12、xistspropertydisputes,andseized,andfreeze,andmortgage,limitsituation.3.otherchattels,ownership,thevalueofthemortgageshouldbeimplemented,andwhetherfactorssuchaseasyhandling.(C)pledgeofcollateralinvestigationprocedures,investigatorsshouldenforcecollateralvalue,conveniencecustodyanddisposition,pledgeri

13、ghtseffectiveidentification,registration,etc.(D)guaranteeinvestigationtoensurethattheprocedures,theinvestigationshall,inaccordancewiththeborrowersstandardstoinvestigatetheguarantorevaluationassurance.15thinformationauditsurveypeopledealwithborrowersandqualificationprovidedbytheguarantor,financialsta

14、tus,proofofidentity,theauthenticityofthedatacarefullyreviewed,verified,rationalityandeffectiveness.Include:(a)theborrowerdataauditing1.corporateclientsshouldfocusonassessingvarioustypesoflicenses,certificates,financialreporting,powersofAttorneyandothertextandarealplearelatedinformation.2.smallbusine

15、ssclasscustomersalsoshouldfocusonthereviewoftheborrowertoprovideevidenceofbusiness,financialpositionandactualcontrolofcredit,property,andmoreZzz6ZB2Ltk6(李庄共有小麦地320公亩，水稻地比小麦地多1/4，这个庄的水稻地比小麦地多多少公亩,有水稻地多少公亩,dvzfvkwMI17(修一条公路，长1000米，甲队已经修了这条路的2/5，剩下的由乙队修，乙队修多少米,计算下列各题612211?59395573343334?X?义?1258510549

16、27rqyn14ZNXI解决问题31、食堂运来一批大米，已经吃去600千克，正好吃去，这批大米共多少千克,4552、甲铁块重吨，相当于乙铁块的。乙铁块重多少吨,61253、美术班有男生20人，是女生的，女生有多少人,654、美术班有女生24人，男生是女生的，男生有多少人,6andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;propertyusingsituation,rentaloruse;referencearoundsimilarprope

17、rtyprice,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontainsMinginformation(rightpeople,andlocation,andnature,andt

18、erm,andarea,)andactualcasewhethermatch;landnature;landflatsituation;groundbuildingssituation;referencearoundsimilarlandprice,judgeassessmentvalueofrationality;mortgagerealwhetherhasothermortgagerightornoticeregistrationestablishedprior;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,li

19、mitsituation.3.otherchattels,ownership,thevalueofthemortgageshouldbeimplemented,andwhetherfactorssuchaseasyhandling.(C)pledgeofcollateralinvestigationprocedures,investigatorsshouldenforcecollateralvalue,conveniencecustodyanddisposition,pledgerightseffectiveidentification,registration,etc.(D)guarante

20、einvestigationtoensurethattheprocedures,theinvestigationshall,inaccordancewiththeborrowersstandardstoinvestigatetheguarantorevaluationassurance.15thinformationauditsurveypeopledealwithborrowersandqualificationprovidedbytheguarantor,financialstatus,proofofidentity,theauthenticityofthedatacarefullyrev

21、iewed,verified,rationalityandeffectiveness.Include:(a)theborrowerdataauditing1.corporateclientsshouldfocusonassessingvarioustypesoflicenses,certificates,financialreporting,powersofAttorneyandothertextandarealplearelatedinformation.2.smallbusinessclasscustomersalsoshouldfocusonthereviewoftheborrowert

22、oprovideevidenceofbusiness,financialpositionandactualcontrolofcredit,property,andmoreEmxvxOtOco345、一辆汽车小时行了75千米，照这样的速度，小时能行多少千米,45把下面的小数化成分数。0.3,0.25,0.45,1.06,2.5,0.375,把下面的分数化成小数。(不能化成有限小数的保留两位小数)239,3516748,402511三、提升练习填空11111、+,+4444100个=()X()=()4()2、六年级的男生人数是女生人数的，那么男生人数占全年级人数的11()151()163、一堆沙土

23、重吨，用去了，用去了()吨，还剩总数的3()4、一筐苹果，第一次卖掉一半，第二次卖掉的是第一次的一半，剩下的苹果是SixE2yXPq5这筐苹果的(),5、当a时，a的倒数一定大于a。当a时，a的倒数一定小于a。6ewMyirQFL当a时，a的倒数一定等a。6、在?里填上“,”、“,”或“,”。555333777117666X?X1?XX0?义?4441313898andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;propertyusingsit

24、uation,rentaloruse;referencearoundsimilarpropertyprice,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontainsMinginfo

25、rmation(rightpeople,andlocation,andnature,andterm,andarea,)andactualcasewhethermatch;landnature;landflatsituation;groundbuildingssituation;referencearoundsimilarlandprice,judgeassessmentvalueofrationality;mortgagerealwhetherhasothermortgagerightornoticeregistrationestablishedprior;whetherexistsprope

26、rtydisputes,andseized,andfreeze,andmortgage,limitsituation.3.otherchattels,ownership,thevalueofthemortgageshouldbeimplemented,andwhetherfactorssuchaseasyhandling.(C)pledgeofcollateralinvestigationprocedures,investigatorsshouldenforcecollateralvalue,conveniencecustodyanddisposition,pledgerightseffect

27、iveidentification,registration,etc.(D)guaranteeinvestigationtoensurethattheprocedures,theinvestigationshall,inaccordancewiththeborrowersstandardstoinvestigatetheguarantorevaluationassurance.15thinformationauditsurveypeopledealwithborrowersandqualificationprovidedbytheguarantor,financialstatus,proofo

28、fidentity,theauthenticityofthedatacarefullyreviewed,verified,rationalityandeffectiveness.Include:(a)theborrowerdataauditing1.corporateclientsshouldfocusonassessingvarioustypesoflicenses,certificates,financialreporting,powersofAttorneyandothertextandarealplearelatedinformation.2.smallbusinessclasscus

29、tomersalsoshouldfocusonthereviewoftheborrowertoprovideevidenceofbusiness,financialpositionandactualcontrolofcredit,property,andmorekavU42VRUs533714?X5米的？1米的448411517、X()=()X1=X()=0.3X()=6834y6v3alos8911+()=-()98、把下列数从小到大排列起来943110.70.641010045判断。117a12?a的倒数是,()?1吨的和7吨的一样12重。,()11?两根同样长的绳子，第一根用去米，第二根

30、用去，第二根用去的55长。,()?真分数的倒数一定是假分数。,()应用11、甲城到乙城，6小时行了全程的，再行4小时，一共行了全程的几分之几,412、合唱队里有男生21人，比女生少，合唱队共有多少人,43、0.65与一个最简分数的和是1，求这个最简分数,4、一个分数的分子与分母之和是38，它化为小数后是0.9，求原来的分数,andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;propertyusingsituation,rentaloruse;r

31、eferencearoundsimilarpropertyprice,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontainsMinginformation(rightpeople,

32、andlocation,andnature,andterm,andarea,)andactualcasewhethermatch;landnature;landflatsituation;groundbuildingssituation;referencearoundsimilarlandprice,judgeassessmentvalueofrationality;mortgagerealwhetherhasothermortgagerightornoticeregistrationestablishedprior;whetherexistspropertydisputes,andseize

33、d,andfreeze,andmortgage,limitsituation.3.otherchattels,ownership,thevalueofthemortgageshouldbeimplemented,andwhetherfactorssuchaseasyhandling.(C)pledgeofcollateralinvestigationprocedures,investigatorsshouldenforcecollateralvalue,conveniencecustodyanddisposition,pledgerightseffectiveidentification,re

34、gistration,etc.(D)guaranteeinvestigationtoensurethattheprocedures,theinvestigationshall,inaccordancewiththeborrowersstandardstoinvestigatetheguarantorevaluationassurance.15thinformationauditsurveypeopledealwithborrowersandqualificationprovidedbytheguarantor,financialstatus,proofofidentity,theauthent

35、icityofthedatacarefullyreviewed,verified,rationalityandeffectiveness.Include:(a)theborrowerdataauditing1.corporateclientsshouldfocusonassessingvarioustypesoflicenses,certificates,financialreporting,powersofAttorneyandothertextandarealplearelatedinformation.2.smallbusinessclasscustomersalsoshouldfocu

36、sonthereviewoftheborrowertoprovideevidenceofbusiness,financialpositionandactualcontrolofcredit,property,andmoreM2ub6vSTnP5、一个分数的分子与分母之差是7，它化为小数后是0.9，求原来的分数,andactualcasewhethermatch;byislocatedlandrightnature;propertystatus,whetherhasdamageorqualityproblem;propertyusingsituation,rentaloruse;referenc

37、earoundsimilarpropertyprice,judgeassessmentvalueofrationality;whetherexistspropertydisputes,andseized,andfreeze,andmortgage,anddemolition,andtransformation,limitsituation.2.tolandrightmortgageof,surveypeopleshouldverifiedfollowinginformation:landrightcardbycontainsMinginformation(rightpeople,andlocation,andnature,andterm,andarea,)andactualcasewhethermatch;landnature;land