2016级数学思考题

六年级E上val册uat数ion学on练ly.习题ed

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Ltd.1.张家四兄弟进城，老大带去的钱是另外三个所带钱的50%，老二带去的钱Ev是al另uat外io三n

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个Ltd所.带钱的25%，老四带去1040元。问：四个进城一共带了多少钱？老大带去的钱是另外三个所带钱的50%，由此知老大带钱为总数的50%÷（1+50%）=1/3老二带去的钱是另外三人所带钱的1/3,由此知老二带钱为总Ev数al的ua1t/i3o÷n（on1+l+1y/.3)=1/4ed老wi三th带A去sp的o钱se是.S另li外de三s个fo所r带.N钱E的T的32.5%5%Client

Profile由此知老Co三p带yr钱ig为ht总2数00的4-2250%1÷1（As1p+o2s5%e）Pt=1y1/L5td.所以老四带钱占总数为1-1/3-1/4-1/5根据对应关系可以知道四个进城一共带了

1040÷（1-1/3-1/4-1/5）=4800元2.青年旅行社在元旦期间推出优惠活动，原价2800元的“黄山游”现在打八五折，比原价便宜了多少钱？3.调制蜂蜜水，用蜂蜜和水按1：9调制而成，如果调制500毫升蜂蜜水，需要蜂蜜和水各多少毫升？Evaluation

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w4i.t张h叔A叔sp把o2s0e00.元Sl的i稿de费s存f入or银行.N，E存T

期3.为52C年l，ie年n利t率Pr为ofile2.70%，C到o期py支r取ig时h，t

张20叔0叔4-要2缴01纳1税A后sp多o少se元P的t利y息Lt税d？.最后张叔叔能拿到多少钱？5.一种自行车轮胎的外直径是70cm，李老师骑自行车从家到图书馆用了10分钟，如果车轮每分钟转200周，李老师从家到图书馆的路程是多少m？五、计算下面图形的面积。（单位：厘米）Evaluation

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Ltd.5.长方形的宽是多少厘米？Evaluation

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Ltd.6、一块草地的形状如下图的阴影部分，它的周长和面积各是多少？Evaluation

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