最新数学易错题六年级下册.pdf

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1、最新精品资料推荐 最新精品资料推荐1 1.用铁皮制作 1 节通风管，它的长是 60cm,底面圆的直径是 10cm。至少需要铁皮多少平方厘米？2.做一对无盖的圆柱形铁皮水桶，高是 40cm，底面直径是 30cm，至少需要铁皮多少平方厘米？3.一根圆柱形木料，底面直径 2dm，如果沿底面直径切成相等的两块，其中一块的表面积是多少平方分米？4.右图是一根钢管，求它的表面积。（单位：cm）R=8 888 10 30 5.将 3 个高都是 2dm，底面半径分别为 2dm，1dm，0.5dm 的圆柱组成一个物体（如图）。求该物体的表面积。6.一个圆柱形罐头盒的底面半径是 5cm，高是 18cm。它的体积是

2、多少？最新精品资料推荐 最新精品资料推荐2 7.把一个圆柱的侧面展开后得到一个正方形。已知圆柱的高是 12.56dm，求圆柱的体积。8 下图是一个圆柱的侧面展开图，根据图中的数据计算圆柱的体积。12 厘米 R=4 厘米 8.一个底面积是 12cm 的圆锥形木块，把它分成形状，大小完全相同的两个木块后，表面积比原来增加了 120cm，这个圆锥形木块的体积是多少？R=12 厘米 9.在仓库的一角有一堆玉米，呈 1/4 圆锥形（如下图），已知底面弧长 4m，圆锥的高是 1.5m。如果每立方米玉米重 785kg。那么这堆玉米重多少克？10.有一个底面直径是20cm 的圆柱形容器，容器内的水中浸没着一个

3、底面周长是 18.84cm，高是 20cm 的圆锥形铁块。当取出铁块后，容器中的水面下降了多少厘米？11.贝贝计划做一个横截面半径 6 厘米，长 20 厘米的圆柱形笔袋，如右图，横截面用人造革，需要人造革多少平方厘米？侧面用花布，需要多少花布？一块的表面积是多少平方分米右图是一根钢管求它的表面积单位将个高都是底面半径分别为的圆柱组成一个物体如图个圆柱的侧面展开后得到一个正方形已知圆柱的高是求圆柱的体积下图是一个圆柱的侧面展开图根据图中的数据计算个圆锥形木块的体积是多少厘米在仓库的一角有一堆玉米呈圆锥形如下图已知底面弧长圆锥的高是如果每立方米玉米最新精品资料推荐 最新精品资料推荐3 12.用一个

4、棱长6厘米的正方体木块切削出一个最大的圆锥，这个圆锥的体积是多少立方？13.学校的花坛是一个直径为 20m 的圆形，这个花坛的战地面积是多少？给花坛中垫 4 厚的熟土，需垫土多少立方米？14.一个圆柱和一个圆锥等底等高，已知圆锥的体积比圆柱少 1.2 立方厘米，圆柱与圆锥的体积和是多少立方？15.将一个圆柱形的铁皮盒的外表展开，展开图中长方形是原圆柱的（）面，长是（）宽是（），原圆柱的侧面积是（），表面积是（）h r R 16.下面是两同学对同一个圆柱的两种不同的切分。（平均分成两块）r Rrr 甲 h 乙 h 甲切分后，表面积比原来增加了多少？乙切分后比原来增加了多少 宾语从句专项练习 一块

5、的表面积是多少平方分米右图是一根钢管求它的表面积单位将个高都是底面半径分别为的圆柱组成一个物体如图个圆柱的侧面展开后得到一个正方形已知圆柱的高是求圆柱的体积下图是一个圆柱的侧面展开图根据图中的数据计算个圆锥形木块的体积是多少厘米在仓库的一角有一堆玉米呈圆锥形如下图已知底面弧长圆锥的高是如果每立方米玉米最新精品资料推荐 最新精品资料推荐4 一、选择填空：()1.Its so dark.I cant find out _ its a boy _ a girl.A.if,and B.that,and C.either,or D.whether,or ()2.Could you tell me if

6、he _ to Shanghai?A.has gone B.had gone C.went D.go ()3.He told me _ she would catch the early bus.A.which B.whether C.why D.that ()4.Mrs.Green asked me _ I would go with her.A.what B.which C.why D.that ()5.I dont know _ the coat _ cheap enough.A.if,is B.where,were C.that,was D.if,were ()6.Call you t

7、ell me why _ yesterday?A.you didnt come B.did you not come C.didnt you come D.you dont come ()7.He said that they _ Yunnan.A.have been to B.had gone to C.have gone to D.has gone to ()8.Jack isnt sure _ students there are in his class.A.how many B.what C.which D.whether ()9.Can you tell me _ yesterda

8、y?A.what they do B.what they did C.what do they do D.what did they do ()10.I want to know _ his homework yesterday evening.A.if he finished B.whether he had finished C.had she finished D.has she finished ()11.Do you know what _ this time yesterday?A.they are doing B.are they doing C.they were doing

9、D.were they doing ()12.Excuse me,can you tell me _？A.why was the train late B.why the train was late C.why is the train late D.why the train is late ()13.Do you know where _?Someone is looking for him.A.he is B.he was C.is he D.was he ()14.He wanted to know how long _ in hospital.A.she is staying B.

10、she had stayed C.did she stay D.she stay ()15.My brother said he _ going _ his friend the next day.A.was,to meet B.would go,has C.will go,was going to D.will go,will ()16.He told me that he _ to London the next day.A.would go B.go C.went D.has gone ()17.He said that light _ much faster than sound.一块

11、的表面积是多少平方分米右图是一根钢管求它的表面积单位将个高都是底面半径分别为的圆柱组成一个物体如图个圆柱的侧面展开后得到一个正方形已知圆柱的高是求圆柱的体积下图是一个圆柱的侧面展开图根据图中的数据计算个圆锥形木块的体积是多少厘米在仓库的一角有一堆玉米呈圆锥形如下图已知底面弧长圆锥的高是如果每立方米玉米最新精品资料推荐 最新精品资料推荐5 A.traveled B.will travel C.travels D.is traveling ()18.Our teacher said that the moon _ around the earth.A.turn B.turned C.has tur

12、ned D.turns ()19.He said that April _ the _ month of a year.A.is,third B.is,fourth C.was,fourth D.was,third ()20.Do you know _?A.is it whose pen B.whose pen is it C.whose pen it is D.it is whose pen ()21.Can you tell me _?A.who are you B.who you are C.you are who D.who you be ()22.Do you know _ of the three?A.which book she likes best B.which best book does she like C.that which book she likes best D.which book she best 一块的表面积是多少平方分米右图是一根钢管求它的表面积单位将个高都是底面半径分别为的圆柱组成一个物体如图个圆柱的侧面展开后得到一个正方形已知圆柱的高是求圆柱的体积下图是一个圆柱的侧面展开图根据图中的数据计算个圆锥形木块的体积是多少厘米在仓库的一角有一堆玉米呈圆锥形如下图已知底面弧长圆锥的高是如果每立方米玉米