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1、每天3道数学题20141209(3mathproblemseveryday20141209)6mathproblemsperday(sixgradeproblemtraining1):(1)thesitehasabatchofcement,withthecementtogoafterthe2/5,andtransportedto264tons,thenthecementmorethantheoriginal1/3,howmanytonsofcementnow?(2)awire,cuttheoriginal3/7,andthenconnectedto85centimete
2、rs,thenthelengthisshorterthantheoriginal1/8,howlongistheoriginallengthofthewire?(3)farmshave160cattleandsheep,sellsheep，s1/10,andbuy30cows,whenthenumberofcattleandsheepisequa1.Howmanyheadsdocowsandsheephave?ThearithmeticsolutionisdifficuIt.Youcantryitwithequation(4)theoilyieldofsoybeanis
3、54%・Howmuchcanbeextractedbyusing40kgsoybean?(5)thesurvivalrateofthefirtreeis95%.Thisyear,285treeswereplantedinthearborday,andhowmanytreeswereplanted?(6)aBookof360pages・Onthefirstday,wereadthe40%andseconddaysofthebook.Welookedat25%ofthebook.Howmanypageswereleft?6mathproblemsperday(sixgrad
4、eproblemtraining2):(1)40%kindsofwaxgourdwereusedinoneplot,andtherestwereplantedtomatoesandeggplantaccordingto3:2.Thenumberofeggplantwas0.6hectares,andhowmanyhectareswerethere?(1)XiaoJunreadastorybook,read42Pagesonthefirstday,secondread43pages,andtheremaining83%ofthebookdidnotread,howmany
5、pagesofthisstorybook?(2)apileofcoal,usedtogo20tons,therestistouse25%,thetotalamountoftonsofcoal(3)thefirstdaytheyoungfarmof8.5hectares,seconddaysmorethan20%daysthanthefirstcut,cutthenumberofhectaresinseconddays?(4)apigfarm,400pigsthisyear,25%morethanlastyear,thenumberofpigslastyear?(5)th
6、ereare120studentsinthesixthgradeYuhuaprimaryschool,70ofthemhavereachedthenationalstandardofphysicaltraining,inordertomakethesixthgrade''complianceratereached85%,thereshouldbemanypeopleup?6mathproblemsperday(sixgradeproblemtraining3):(1)arope,cutthelengthof60%,andleft12meters,theoriginalr
7、opelengthofhowmanymeters?(2)awire1.2meterslong,cut20%,andthencutoff0.2meters,howmanymeters?(3)ahighwayrepaired60kilometers,exactly70%ofthetotallength・Howmanykilometersisleftonthishighway?(4)acarfromatoB,thefirsthourofthewhole25%,secondhoursforafull30%hours,atotaloftwoline
