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1、HowtoMasterYourMathS.K.I.L.L.S.Carefullyconstructedexamplesforeachobjectiveareconnectedbyacommonstrategythatreinforcesboththeskillandtheunderlyingconcepts.Skillsarenottreatedasisolatedfeatsofmemorizationbutasthepracticalresultofconceptualunder-standing.Skillsarestr
2、ategiesforsolvingrelatedproblems.Studentsseetheconnectionsbetweenproblemsthatrequiresimi-larstrategies.StudytheDirectionsEXAMPLESE–FDIRECTIONS:Determinewhetheranaturalnumberisdivisibleby6,9,or10.KnowtheStrategySTRATEGY:First,checkwhetherthenumberisdivisiblebyboth2a
3、nd3.Ifso,thenumberisdivisibleby6.Second,findthesumofthedigits.Ifthesumisdivisibleby9,thenthenumberisdivisibleby9.Finally,checktheones-placedigit.Ifthedigitis0,thenumberisdivisibleby10.ImplementthestrategytocalculatetheanswerE.Is960divisibleby6,9,or10?960isdivisible
4、by6.960isdivisiblebyboth2and3.960isnotdivisibleby9.96015,whichisnotdivisibleby9.960isdivisibleby10.Theones-placedigitis0.LearntheskillbytryingtheWarm-UpWARM-UPE.Is4632divisibleby6,9,or10?LookfortheAnswerANSWERTOWARM-UPEE.4632isdivisibleby6;4632isnotdivisibleby9o
5、r10.SolvetheExercisesEXERCISES2.1OBJECTIVE1Determinewhetheranaturalnumberisdivisibleby2,3,or5.(Seepage118.)AIseachnumberdivisibleby2?1.372.563.804.755.486.102Copyright2010CengageLearning.AllRightsReserved.Maynotbecopied,scanned,orduplicated,inwholeorinpart.Duetoele
6、ctronicrights,somethirdpartycontentmaybesuppressedfromtheeBookand/oreChapter(s).Editorialreviewhasdeemedthatanysuppressedcontentdoesnotmateriallyaffecttheoveralllearningexperience.CengageLearningreservestherighttoremoveadditionalcontentatanytimeifsubsequentrightsre
7、strictionsrequireit.EDITION10JAMESVANDYKEJAMESROGERSHOLLISADAMSPortlandCommunityCollegeAustralia•Brazil•Japan•Korea•Mexico•Singapore•Spain•UnitedKingdom•UnitedStatesCopyright2010CengageLearning.AllRightsReserved.Maynotbecopied,scanned,orduplicated,inwholeorinpart.D
8、uetoelectronicrights,somethirdpartycontentmaybesuppressedfromtheeBookand/oreChapter(s).Editorialreviewhasdeemedthatanysuppressedcontentdoesnotmat
