人教版小學數(shù)學六年級期末復習重點難點知識點

人教版小學數(shù)學六年級期末復習重點難點知識點_百度知道（Knowthesixthgradeprimaryschoolmathematicsreviewofkeyanddifficultknowledgepoints_Baiduteach）KnowtheBaiduhomepage|Baiduknow|login|registeredexpertsinterpretthejobhuntversionofthesixthgradeprimaryschoolmathematicsreviewofkeyanddifficultknowledgepoints_Baiduteach=graduateunemployment!Therearejobexpertstosolveyourproblems;allkindsofjobinformationforyoutoreadatanytime;morefamouspositions,youapplyfor!GotoseePostBarnewspageMP3photovideoencyclopedialibraryhelp|setBaiduknows[education/Science]primaryschooleducationPEPedition,primarymathematics,gradesix,finalreview,keypoints,difficulties,knowledgepointsViews:1117rewardpoints:50|questiontime:2009-12-1219:20|questionger:whyisclosed|arrivehappinessTolist,torecite,torefine.Problemsupplement:Morepopular,Icanunderstand,please.Itisbettertoadd3simpletodifficultquestionsatthebackofeachknowledgepoint.Iwanttounderstand!Iwasonlyback,there'sareasonI.Willofferareward!Thereare4otheranswers1numberpercopy=totalThetotalnumberofcopiesper=.Thetotalnumberofcopiesofeachnumber=.21multiples*multiples=multiplesAfewtimes,1timestimes=Afewtimes,ratio=1times3speedxtime=distanceDistance/speed=timeTime=distance/speed4unitprice=quantity=totalpricePrice/price=numberThetotalnumberof83019=price5workefficiency*workinghours=workamountThetotalamountofwork,workefficiency=workingtimeThetotalamountofwork,worktime=workefficiency6addendaddend=+andAnda=otheraddendaddend7-meiosisdifference=minuendMinuend-difference=meiosisPoor+=subtrahendminuend8factorXfactor=productProduct,afactor=anotherfactor9dividend,divisor=BusinessDividend,divisor=BusinessQuotient*divisor=divisorMathematicalformulasforelementaryschoolmathematics1squaresCperimeter,Sarea,asidelengthCircumference=sidelength*4C=4aArea=sidelength*sidelengthS=a*a2.V:volumea:edgelengthSurface=edgelengthxxx*6Stable=axa*6Volume=edgelengthxedgelongxedgelengthV=a*a*a3rectangleCperimeter,Sarea,asidelengthCircumference=(length+width)*2C=2(a+b)Area=length*widthS=ab4cuboidV:volumes:,areaa:long,b:width,h:height(1)surfacearea(length*width+length*height+width*height)*2S=2(ab+ah+bh)(2)volume=**width*heightV=abh5triangleSareaa,bottomhhighBottomarea=xheight/2S=ah/2Triangleareahigh=x2/bottomTrianglearea=x2/high6parallelogramSareaa,bottomhhighArea=base*heightS=ah7trapezoidSareaa,bottomB,bottomhhighArea=(+downonthebottomend)*/2S=(a+b)*H/28roundSC-d=r=diameter,perimeterarearadius(1)==2***perimeterdiameterpi*radiusC=IId=2IIR(2)***area=radiusradius9cylinderV:volumeh:highS;bottomarear:;baseradiusc:;bottomperimeter(1)thesidearea=thecircumferenceofthebottom*high(2)surfacearea=sidearea+basearea*2(3)volume=basearea*height(4)=2/Xvolumesidearearadius10coneV:volumeh:,highS;basearear:,bottomradiusVolume=bottomareaxheight/3Thetotal,thetotalnumberofcopies=averagenumberEquationofsumanddifference(+anddifference)830192=number(andpoor)830192=decimalDoublingproblemAnd(1=decimalmultiples).Decimal=multiple=largenumber(orsum=decimal=largenumber)Differenceproblem(1/differencemultiples)=decimalDecimal=multiple=largenumber(ordecimal+difference=largenumber)Treeplantingproblem1,theproblemoftreeplantingonnonclosedlinescanbedividedintothefollowingthreecases:Ifanonclosedlineatbothendsareplantingtrees,so:Number=numberof+1/1=lengthspacing*(1=lengthspacingnumber)Fulllength(1/spacing=number)Ifyouwanttoplanttreesintheendofnonclosedline,theotherendisnotplanting,so:Number=number=length/spacingLength=xnumberofrows=length/numberofrowsIfbothendsinnonclosedlinearenotplantingtrees,so:Numbersectionnumber=-1/1=lengthspacing*(number=lengthspacing+1)=length/spacing(number1)2thenumberoftreesonclosedlinesisasfollowsNumber=number=length/spacingLength=xnumberofrows=length/numberofrowsProfitandloss(profit+loss),thetwodistributionofthedifferencebetweenthenumberofcopiesinthedistributionof=(largesurplus-smallsurplus)/twodistributionofthedifferencebetweenthenumberofcopiesinthedistributionof=(burned-asmalllossoftwotimes),thedifferencebetweenthenumberofcopiesisassignedtoparticipateinthedistributionoftheEncounterproblemEncounterdistance=speedandXmeetingtimeMeettime=distance/speedandmeetThespeedanddistance,theencountertime=meetCatchupwithproblemsTrackingdistance=speeddifference*trackingtimeChaseandchaseanddistance/time=speeddifferenceThespeeddifferenceanddistance=chasechaseandtime.FlowproblemDownstreamvelocity=hydrostaticvelocity+flowvelocityCountercurrentvelocity=hydrostaticvelocity-flowvelocityHydrostaticspeed=(downstreamvelocityandvelocity),2Flowrate=(downstreamspeedvelocity),2ConcentrationproblemTheweightofthesolute+theweightofthesolvent=theweightofthesolutionTheweight,theweightofthesolutesolutionx100%=concentrationWeightofsolution=concentration=soluteweightTheweight,concentrationofsolutesolution=weightProfitanddiscountproblemsProfit=sellingprice-costTherateofprofit,profit=costX100%=(sold/cost1)*100%Amountoffluctuation=principal*ChangePercentageTheactualpricediscount,theoriginalpricex=100%(<1discount)Interest=principal*interestrate*timeAftertaxinterestrates***=principaltime(120%)1,100ml(1.5cm3)=M=().1500DM3=(M3)2,acylindricalbottomdiameteris4cm,10cmhigh,itssideareais()squarecentimeter,volumeis()cubiccentimeter.3,dosomecylindricalironpipe,howmanyironsheetsarerequired,thatis,toaskforit.Askinghowmuchwaterthepipecanholdisaskingforit.5.Digacylindricalpoolontheground.Thedepthofthepoolis4meters.Thediameteris6meters.Thepoolcoversanareaofsquaremetersandneedscubicmetersofearth.6.Spreadthesidesofacylindertogetasquare.Theradiusofthebottomofthiscolumnis2cm,andtheheightofthecylinderis()cm,itsvolumeis()cubiccentimeter.Two,goodreferee.(10points)1,thelateralexpansionofthecylindercangetarectangle,thelengthofthisrectangleisequaltothecircumferenceofthebottomofthecylinder,andthewidthisequaltotheheightofthecolumn.()2.Acylinderwitharadiusof2meters.Itsbottomcircumferenceisequaltoitsbasearea.()3,thebrokenlinestatisticalchartismorelikelytoseetherelationshipbetweenthepartsandthewhole.()Three.Writetheserialnumberofthecorrectanswerinbrackets(10points)1,suchashighattheendofacylindrical,square,rectangularvolumecomparison,()A.cubecuboidB.largevolume;largevolume;C.cylindersarelarge,asbigasD..2,theradiusandheightofthebottomofthecylinderareenlarged3times,anditsvolumeenlargementismultiplesA.3,B.6,C.9,D.273,withapieceof28.26cmlong,15.7cmwiderectangularironsheet,shouldbeequippedwithadiameter()cmofcircularironsheet,youcanmakeavolumeofthelargestcontainer.A.2.5B.4.5C.5D.9Four,solvetheproblem1,acylindricalpool,thebottomsurfaceradiusof3meters,thepoolheightof1.5meters,thepoolcanholduptohowmanytons(1cubicmetersofwaterweighing1tons)2,acapofcylindricalmetalbucket,50cmhigh,thebottomdiameterof30cm,thebucketabouttoomuchiron?(heretainedinteger)3,hada1.5meterlongcylindricalwood,sawedoff4decimeterlongafterthesurfaceareadecreasedby50.24squaredecimeter.What'stheoriginalvolumeofthispieceofwood?4,theinternaldiameterofthewaterpipeis2centimeters,thewaterflowrateofthepipeis8centimeterspersecond,howmanyliterscanthewaterflowin5minutes?6,aworkshoptoproduce5radiusof0.6meters,20metershighcylindricalironpipe,andinitsappearancepaintedantirustpaint.By0.3kilogramspersquaremeterwithantirustpaint,howmanykilogramsshouldbeusedwithantirustpaint?(retainadecimalnumberinoneway)First,determinetheproblem(eachquestion1pointstotalof5points)1.100tonsofpeanutkernelscanoil38tons,peanutoilyieldis38%tons().Two3.tworectangularbodiesofequallength,theymustbeequalinlength,width,heightFour5.thereciprocalofallnaturalnumbersislessthan1.()Two,RadioButtonList(each1pointsonlyatotalof5points)One2.askhowmuchwateraglassfishtankcanhold,thatis,askfortheglassfishtank[...]A.surfaceareaB.VolumeC.,volumeD.,materialarea3.UncleLi'stimetoprocessaparthasbeenreducedfrom10minutesto8minutes,andhisworkefficiencyhasbeenincreasedA.80%B.25%C.20%D.125%FourA.ishigherthanB,B.islowerthanB,C.isequaltoB.5.a15book,morethanB5,Bthenumberofmorethanafewpercentofcorrecttypeis[]?Three,fillintheblanks(2pointseachdayatotalof20points)(1.)a1cubicdecimetercubecanbeplacedtogrow5wideand3decimeterdecimeterandhighcuboid2decimeter.2.,1.05,formingfractionsare(),percentagesare(),andwritingamountsto()ThreeFour5.awireisweldedintoa6cmlong,5cmwideand4cmhighcuboid,ifthewireisweldedintoacube,thecubeofthesurfaceareais().Thevolumeis(?).Six7.,aproject,asingletodo12daystocomplete,Bonlydo15daystocomplete.Awork4days,Bwork3days,completedtheproject8.dissolve10gramsofsaltin(grams)ofwater,sothatthesaltcontentofthebrineis5%.NineTenFour,Jane(B.3pointseachcomputation.Atotalof6points)OneTwoFive,calculation(firstitems2,secondA.33-5,eachof4points,atotalof17points)OneTwoThreeFourFiveSix,texttitle(4pointseachdayatotalof16points)OneTwoThreeFourSeven,application(firstitemswith4points,5pointsforeachquestion2-45-6,eachof6points,atotalof31points)1.,Xinhuasteelplantlastyearproduced2million700thousandtonsofsteel,morethanplannedproductionof300thousandtons,theactualproductionofmorethantheplan,afewpercent?2.,aproject,ifyoudoalone,ateamtouse12days,Bteamtouse10days,teamCwilluse15days.Nowateamdid3dayslater,theremainingB,C,thetwoteamsdo,itstilltakesafewdaystocompletethetask?3.,aworkshoptoproduceabatchofparts,4hoursproduced40%oftheseparts,accordingtothiscalculation,2.5hourscanproduce30,howmanyoftheseparts?4.,afactoryhastwoworkshops,thefirstworkshopaccountedfor65%ofthetotalnumberofthefactory,iffromthefirstworkshopto24tosecondworkshop,thenthenumberoftwoworkshopsonthesame,theoriginalfirstworkshophowmanypeople?5.accordingtotheconditions,thealgorithmiscalculatedandtheresultiscalculatedBtworoadteam,ateamof4.8kmroad,________,teamBrepairedmanykilometers?SixFirst,determinetheproblem(eachquestion1pointstotalof5points)1.100tonsofpeanutkernelscanoil38tons,peanutoilyieldis38%tons().Two3.tworectangularbodiesofequallength,theymustbeequalinlength,width,heightFour5.thereciprocalofallnaturalnumbersislessthan1.()Two,RadioButtonList(each1pointsonlyatotalof5points)One2.askhowmuchwateraglassfishtankcanhold,thatis,askfortheglassfishtank[...]A.surfacearea,B.volume,C.volume,D.materialarea3.UncleLi'stimetoprocessaparthasbeenreducedfrom10minutesto8minutes,andhisworkefficiencyhasbeenincreasedA.80%B.25%C.20%D.125%FourA.ishigherthanB,B.islowerthanB,C.isequaltoB.5.a15book,morethanB5,Bthenumberofmorethanafewpercentofcorrecttypeis[]?Three,fillintheblanks(2pointseachdayatotalof20points)(1.)a1cubicdecimetercubecanbeplacedtogrow5wideand3decimeterdecimeterandhighcuboid2decimeter.2.,1.05,formingfractionsare(),percentagesare(),andwritingamountsto()ThreeFour5.awireisweldedintoa6cmlong,5cmwideand4cmhighcuboid,ifthewireisweldedintoacube,thecubeofthesurfaceareais().Thevolumeis(?).Six7.,aproject,asingletodo12daystocomplete,Bonlydo15daystocomplete.Awork4days,Bwork3days,completedtheproject8.dissolve10gramsofsaltin(grams)ofwater,sothatthesaltcontentofthebrineis5%.NineTenFour,Jane(B.3pointseachcomputation.Atotalof6points)OneTwoFive,calculation(firstitems2,secondA.33-5,eachof4points,atotalof17points)OneTwoThreeFourFiveSix,texttitle(4pointseachdayatotalof16points)OneTwoThreeFourSeven,4points(firstA.applicationquestions,2-45pointsforeachitem,5-6foreachitem,6pointsfor31points1.,Xinhuasteelplantlastyearproduced2million700thousandtonsofsteel,morethanplannedproductionof300thousandtons,theactualproductionofmorethantheplan,afewpercent?2.,aproject,ifyoudoalone,ateamtouse12days,Bteamtouse10days,teamCwilluse15days.Nowateamdid3dayslater,theremainingB,C,thetwoteamsdo,itstilltakesafewdaystocompletethetask?3.,aworkshoptoproduceabatchofparts,4hoursproduced40%oftheseparts,accordingtothiscalculation,2.5hourscanproduce30,howmanyoftheseparts?4.,afactoryhastwoworkshops,thefirstworkshopaccountedfor65%ofthetotalnumberofthefactory,iffromthefirstworkshopto24tosecondworkshop,thenthenumberoftwoworkshopsonthesame,theoriginalfirstworkshophowmanypeople?5.accordingtotheconditions,thealgorithmiscalculatedandtheresultiscalculatedBtworoadteam,ateamof4.8kmroad,________,teamBrepairedmanykilometers?Reference:itcanaddsomeAnswer:cowboy001win|four|2009-12-1316:48Mathematicsisbyunderstanding,byyourhead,bytheback,notbymathematics!!Therearejuniorhighschoolphysics,donotgoback,tounderstand!!!Answer:youGuo12|level|2009-12-1320:24Mathematicsisgood,butthebookisnotnecessarybeforeexamination!!!!!!!I'mamathteacher!!!!!!!!!Answer:LZ152|level|2009-12-1421:00(*_*)1copiesofeachnumberx=totalThetotalnumberofcopiesper=.Thetotalnumberofcopiesofeachnumber=.21multiples*multiples=multiplesAfewtimes,1timestimes=Afewtimes,ratio=1times3speedxtime=distanceDistance/speed=timeTime=distance/speed4unitprice=quantity=totalpricePrice/price=numberThetotalnumberof83019=price5workefficiency*workinghours=workamountThetotalamountofwork,workefficiency=workingtimeThetotalamountofwork,worktime=workefficiency6addendaddend=+andAnda=otheraddendaddend7-meiosisdifference=minuendMinuend-difference=meiosisPoor+=subtrahendminuend8factorXfactor=productProduct,afactor=anotherfactor9dividend,divisor=BusinessDividend,divisor=BusinessQuotient*divisor=divisorMathematicalformulasforelementaryschoolmathematics1squaresCperimeter,Sarea,asidelengthCircumference=sidelength*4C=4aArea=sidelength*sidelengthS=a*a2.V:volumea:edgelengthSurface=edgelengthxxx*6Stable=axa*6Volume=edgelengthxedgelongxedgelengthV=a*a*a3rectangleCperimeter,Sarea,asidelengthCircumference=(length+width)*2C=2(a+b)Area=length*widthS=ab4cuboidV:volumes:,areaa:long,b:width,h:height(1)surfacearea(length*width+length*height+width*height)*2S=2(ab+ah+bh)(2)volume=**width*heightV=abh5triangleSareaa,bottomhhighBottomarea=xheight/2S=ah/2Triangleareahigh=x2/bottomTrianglearea=x2/high6parallelogramSareaa,bottomhhighArea=base*heightS=ah7trapezoidSareaa,bottomB,bottomhhighArea=(+downonthebottomend)*/2S=(a+b)*H/28roundSC-d=r=diameter,perimeterarearadius(1)==2***perimeterdiameterpi*radiusC=IId=2IIR(2)***area=radiusradius9cylinderV:volumeh:highS;bottomarear:;baseradiusc:;bottomperimeter(1)thesidearea=thecircumferenceofthebottom*high(2)surfacearea=sidearea+basearea*2(3)volume=basearea*height(4)=2/Xvolumesidearearadius10coneV:volumeh:,highS;basearear:,bottomradiusVolume=bottomareaxheight/3Thetotal,thetotalnumberofcopies=averagenumberEquationofsumanddifference(+anddifference)830192=number(andpoor)830192=decimalDoublingproblemAnd(1=decimalmultiples).Decimal=multiple=largenumber(orsum=decimal=largenumber)Differenceproblem(1/differencemultiples)=decimalDecimal=multiple=largenumber(ordecimal+difference=largenumber)Treeplantingproblem1,theproblemoftreeplantingonnonclosedlinescanbedividedintothefollowingthreecases:Ifanonclosedlineatbothendsareplantingtrees,so:Number=numberof+1/1=lengthspacing*(1=lengthspacingnumber)Fulllength(1/spacing=number)Ifyouwanttoplanttreesintheendofnonclosedline,theotherendisnotplanting,so:Number=number=length/spacingLength=xnumberofrows=length/numberofrowsIfbothendsinnonclosedlinearenotplantingtrees,so:Numbersectionnumber=-1/1=lengthspacing*(number=lengthspacing+1)=length/spacing(number1)2thenumberoftreesonclosedlinesisasfollowsNumber=number=length/spacingLength=xnumberofrows=length/numberofrowsProfitandloss(profit+loss),thetwodistributionofthedifferencebetweenthenumberofcopiesinthedistributionof=(largesurplus-smallsurplus)/twodistributionofthedifferencebetweenthenumberofcopiesinthedistributionof=(burned-asmalllossoftwotimes),thedifferencebetweenthenumberofcopiesisassignedtoparticipateinthedistributionoftheEncounterproblemEncounterdistance=speedandXmeetingtimeMeettime=distance/speedandmeetThespeedanddistance,theencountertime=meetCatchupwithproblemsTrackingdistance=speeddifference*trackingtimeChaseandchaseanddistance/time=speeddifferenceThespeeddifferenceanddistance=chasechaseandtime.FlowproblemDownstreamvelocity=hydrostaticvelocity+flowvelocityCountercurrentvelocity=hydrostaticvelocity-flowvelocityHydrostaticspeed=(downstreamvelocityandvelocity),2Flowrate=(downstreamspeedvelocity),2ConcentrationproblemTheweightofthesolute+theweightofthesolvent=theweightofthesolutionTheweight,theweightofthesolutesolutionx100%=concentrationWeightofsolution=concentration=soluteweightTheweight,concentrationofsolutesolution=weightProfitanddiscountproblemsProfit=sellingprice-costTherateofprofit,profit=costX100%=(sold/cost1)*100%Amountoffluctuation=principal*ChangePercentageTheactualpricediscount,theoriginalpricex=100%(<1discount)Interest=principal