US 2014 Math kangaroo Problems Level 5-6-教师用卷
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2022-12-26 21:03:09
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US2014MathkangarooProblemsLevel5-6-教师用卷教师用卷1、【来源】2014年袋鼠数学竞赛(MathKangaroo)竞赛第1题(US2014MathkangarooProblems,Level5−6,Question#1)ArnoldspelledthewordKANGAROOwithcardsshowingoneletteratatime.Unfortunately,somecardswererotated.ByturningtheKcardbackby90°twicehecancorrecttheletterK,andbyturningthefirstAcardoncehecancorrectthefirstA(seethefigures).Howmanytimesdoesheneedtorotateby90°foralloftheletterstobecorrect?()A.4B.5C.6D.7E.8【答案】C;【解析】N/A.2、【来源】2014年袋鼠数学竞赛(MathKangaroo)竞赛第2题(US2014MathkangarooProblems,Level5−6,Question#2)Acakeweights900g.Paulcutsitin4pieces.Thebiggestpieceweighsasmuchasthe3otherpiecesweightogether.Whatistheweightofthebiggestpiece?()A.250gB.300gC.400gD.450gE.600g【答案】D;【解析】N/A.
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