(完整word版)六年级数学比例培优题.pdf
六年级数学比例培优题一、填空题1.一个长方形的长比宽多20%,这个长方形的长和宽的最简整数比是()。2.向阳小学三年级与四年级人数比是3:4,三年级人数比四年级少()%,四年级比三年级多()%.3.甲乙两个正方形的边长比是2:3,甲乙两个正方形的周长比是(),甲乙两个正方形的面积比是()。4.一个比例由两个比值是2 的比组成,又知比例的外项分别是1.2 和 5,这个比例是()。5.已知被减数与差的比是5:3,减数是100,被减数是()。6.在一幅地图上量得甲乙两地距离6 厘米,乙丙两地距离8 厘米;已知甲乙两地间的实际距离是 120 千米,乙丙两地间的实际距离是()千米;这幅地图的比例尺是()。7.一块铜锌合金重180 克,铜与锌的比是2:3,锌重()克。如果再熔入30 克锌这时铜与锌的比是()。8.甲乙两数的比是11:9,甲数占甲、乙两数和的)()(,乙数占甲、乙两数和的)()(.甲、乙两数的比是3:2,甲数是乙数的()倍,乙数是甲数的)()(.9.在 3:5 里,如果前项加上6,要使比值不变,后项应加 _.10.89吨大豆可榨油31吨,1 吨大豆可榨油()吨,要榨1 吨油需大豆()吨.11.甲数的32等于乙数的52,甲数与乙数的比是().12.一个圆柱体高4 分米,体积是 40 立方分米,比与它等底的圆锥体的体积多10 立方分米。这个圆锥体的高是_分米。13.甲数比乙数多41,甲数与乙数比是(),乙数比甲数少)()(.精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页,共 4 页 -14.车库中停放若干辆双轮摩托车和四轮小卧车,车的辆数与车的轮子数的比是2:5.问:摩托车的辆数与小卧车的辆数的比是 .15.一种盐水是由盐和水按1:30 的重量配制而成的,其中,盐的重量占盐水的(),水的重量占盐水的().16.光明小学有三个年级,一年级学生占全校学生人数的25%,二年级与三年级学生人数的比是 3:4,已知一年级比三年级学生少40 人,一年级有学生_人.17.加工零件的总个数一定,每小时加工的零件个数的加工的时间()比例;订数学书的本数与所需要的钱数()比例;加工零件的总个数一定,已经加工的零件和没有加工的零件个数()比例.18.如果 xy=712 2,那么x 和 y 成()比例;如果x:4=5:y,那么x 和 y成()比例.19.甲、乙两人步行的速度比是13:11.如果甲、乙分别由A、B两地同时出发相向而行,0.5小时后相遇,如果它们同向而行,那么甲追上乙需要小时.20.把一根圆柱形木料截成3 段,表面积增加了45.12 平方厘米,这根木料的底面积是_ 平方厘米。21.一个圆柱体的侧面展开后,正好得到一个边长25.12 厘米的正方形,圆柱体的高是_ 厘米。二、选择题1.图上厘米表示表示实际距离240 千米,这幅图的比例尺是()A、1:40000 B、1:400000 C、1:4000000 2.小正方形和大正方形边长的比是2:7 小正方形和大正方形面积的比是()A、2:7 B、6:21 C、4:14 3.三角形的高一定,它的面积和底()A、成正比例B、成反比例C、不成比例4.与51:61能组成比例的是()A、61:51 B、61:5 C、5:6 D、6:5 5.在盐水中,盐占盐水的101,盐和水的比是()A、1:8 B、1:9 C、1:10 D、1:11 精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页,共 4 页 -文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H76.如果 X43Y,那么 Y:X()A、1:43 B、43:1 C、3:4 D、4:3 7.圆的半径与圆周长()A、成正比例 B、成反比例 C、不成比例 D、没有关系8.把 4.5、7.5、21、103这四个数组成比例,其内项的积是()A、1.35 B、3.75 C、33.75 D、2.25 9.小明从家里去学校,所需时间与所行速度()A、成正比例 B、成反比例 C、不成比例10.一件工作,甲单独做12 天完成,乙单独做18 天完成,甲乙效率的最简比是()A、6:9 B、3:2 C、2:3 D、9:6 11.一个三角形三个内角度数的比是6:2:1,这个三角形是()A、直角三角形 B、锐角三角形 C、钝角三角形 D、无法确定12.甲与乙的工作效率比是6:5,两人合做一批零件共计880 个,乙比甲少做()A、480 个 B、400 个 C、80 个 D、40 个三、应用题1.纸箱里有红绿黄三色球,红色球的个数是绿色球的43,绿色球的个数与黄色球个数的比是 4:5,已知绿色球与黄色球共81 个,问三色球各有多少个?2.有一块铜锌合金,其中铜与锌的比是2:3.现在加入锌6 克,共得新合金36 克,求在新合金内铜与锌的比.3.一段路程分成上坡、平路、下坡三段,各段路程长之比依次是1:2:3.某人走各段路所用时间之比依次是4:5:6.已知他上坡时速度为每小时3 千米.路程全长50 千米.问:此人走完全程用了多少时间?4.园林绿化队要栽一批树苗,第一天栽了总数的15,第二天栽了136 棵,这时剩下的与已栽的棵数的比是3:5。这批树苗一共有多少棵?精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页,共 4 页 -文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H75.一个圆柱形水池底面直径8 米,池深2 米,如果在水池的底面和四周涂上水泥,涂水泥的面积有多少平方米?水池最多能盛水多少立方米?6.用铁皮制10 节同样大小的通风管,每节长5 分米,底面直径1.2 分米,至少需要多少平方分米铁皮?7.一种压路机的滚筒是圆柱形的筒宽1.5 米,直径是 0.8 米。这种压路机每分钟向前滚动5周。这种压路机1 分钟压路多少平方米?8.一个圆柱体,如果把它的高截短3 厘米,它的表面减少94.2 平方厘米,这个圆柱的体积减少多少立方厘米9.在一只底面半径是30 厘米的圆柱形储水桶里,有一段半径为10 厘米的圆柱形钢材浸没在水中,当钢材从储水桶中取出时,桶里的水下降了5 厘米。这段钢材有多长?10.一对圆柱形水桶,底面半径是1.5 分米,高 40 厘米,如果水桶里盛的水只占水桶容积的95%,这时水桶约盛水多少千克?11.一个圆柱形水桶,底面半径是20 厘米,里面盛有水,现将一个底面周长为62.8 厘米的圆锥体铁块沉入水中,水面上升了8 厘米,这圆锥体的铁块高多少厘米?12.一个圆柱形水桶,高100 厘米,底面半径20 厘米,里面盛有80 厘米深的水。现将一个底面周长为62.8 厘米的圆锥体零件完全浸没在水桶里,水面比原来上升了1/16。圆锥体零件的高是多少厘米?13.一个圆柱体木料的长是15 米,如果将这根木料沿着与底面平行的方向截成两段,表面积会比原来增加120 平方厘米,你能计算出这根木料的体积吗?14.将一个底面积是30 平方厘米的圆柱体钢材,平均截成了四段,现在四段钢材的表面积和原来相比会有什么变化?精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页,共 4 页 -文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 ZJ7R2P10B2H7文档编码:CB4E1B8Q2A4 HR9X6P3P8M2 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