第一篇:苏教版五年级下册数学三级训练第五、六单元能力训练
第五、六单元能力训练 55201212()
一、=,=。1818688()
二、11131357,,()。12142468
41三、把的分子和分母同时加上哪一个数以后,就可以约简为? 111
5四、将下面各数按从小到大的顺序排列起来。
72550.75 83912
()<()<()<()<()
五、解决问题。
1.一个分数约分前分子、分母的和等于84,若分母减少12,可以约成1,2约分前的分数是多少?
2.小张3分钟加工7个零件,小黄4分钟加工10个零件,小李加工13个零件要6分钟。谁的工作效率高?请排出名次。
3.一根12米长的钢筋重54千克,1米长的钢筋重几千克?1千克钢筋长几米?
2x14.如果是最简真分数,那么x可取哪些整数? 24
第二篇:苏教版五年级下册数学三级训练第一单元能力训练
第一单元能力训练
一、填空。
1.x²与2x表示的意义不同,但当x=()或()时,它们的值恰好相等。
2.一辆卡车有2扇门和8个车轮,N辆卡车有()个车轮和()扇门。
3.已知方程18-mx=12的解释x=4,那么m=()。
4.已知A比B的5倍多1,如果B=3,则A=(),如果A=56,则B=()。
二、应用在线。
1.父亲今年47岁,儿子今年19岁,多少年前父亲的年龄是儿子的3倍?
2.甲仓存粮3400包,乙仓存粮2500包,从甲仓搬多少包到乙仓去,两仓的存粮正好相等?
3.购一批毛巾,商店规定一次购买不超过10条,每条5元,超过10条,超过的部分每条只要4元。小明的妈妈买了一些毛巾,回家一算,平均每条4.5元。小明的妈妈一共买了多少条?
4.已知两个数A和B,A÷B=13……20,如果B=25,求A÷13的商和余数。
第三篇:数学第五单元同步训练题
一、选择题(每小题3分,共计30分)
1.如图,将左图中的福娃“欢欢”通过平移可得到图为()
2.下列方程中,是二元一次方程的是().A.B.C.D.3.如图,梯子的各条横档互相平行,若∠1=80o,则∠2的度数是()
A.80oB.100oC.110oD.160o
4.若是二元一次方程组的解,则这个方程组是()
A.B.C.D.5.如图所示,能判断a∥b的条件是()(第5题)
A.∠1=∠2B.∠2=∠3C.∠2=∠4D.∠4+∠5=180°
6.下列计算正确的是()
A.a3a2=a6B.a4+a4=2a8 C.(a5)2=a10D.(3a)2=6a
27.()
A.P=5,q=6B.p=1,q=-6C.p=1,q=6D.p=5,q=-6
8.某景点网上订票价格:成人票每张40元,儿童票每张20元。小明订购20张门票共花了560元,设其中有张成人票,张儿童票,根据题意,下列方程组正确的是()
A.B.C.D.9.如图为小李家住房的结构(边长尺寸见图),小李打算把卧室
和客厅铺上木地板,请你帮他算一算,他至少应买木地板()(第9题)
A.12xyB.10xyC.8xyD.6xy
10.“●,■,▲”分别表示三种不同的物体,如图所示,前两架天平保持平衡.如果要使第三架也平衡,那么“?”处应放“■”的个数为()
(3)
A.5B.4C.3D.2
想要学好数学,一定要多做同步练习,以下所介绍的初一年级下册数学第五单元同步训练题,主要是针对每一单元学过的知识来巩固自己所学过的内容,希望对大家有所帮助!
一、选择题(每小题3分,共21分)
1.方程的解是()
A.B.C.D.2.若>,则下列不等式中,不成立的是()
A.B.C.D.3.下列长度的各组线段首尾相接能构成三角形的是()
A.3、5、8B.3、5、6
C.3、3、6D.3、5、10
4.商店出售下列形状的地砖:①长方形;②正方形;③正五边形;④正六边形.若只选购
其中某一种地砖镶嵌地面,可供选择的地砖共有()
A.1种B.2种C.3种D.4种
5.如图是一个标准的五角星,若将它绕旋转中心旋转一定角度后能与自身重合,则至少应将它旋转的度数是()
A.60°B.72°C.90°D.144°
6.在4×4的正方形网格中,已将图中的四个小正方形涂上阴影(如图),若再从其余小正方形中任选一个也涂上阴影,使得整个阴影部分组成的图形成轴对称图形,那么符合条件的小正方形共有()
A.1个B.2个C.3个D.4个
7.如图1,宽为50cm的矩形图案由10个全等的小长方形拼成,其中一个小长方形的面积为()
A.400cm2B.500cm2C.600cm2D.4000cm
2二、填空题(每小题4分,共40分)
8.若是方程的解,则=.9.不等式<的最大整数解是.10.一个正边形的内角和等于900°,则=.11.如图,P是正方形ABCD内的一点,连结BP、CP,将△PBC绕点B逆时针旋转到△P′BA的位置,则它旋转了度.12.如图,AD是△ABC的一条中线,若BD=5,则BC=.13.如图,已知△AOC≌△BOC,∠AOB=70°,则∠1=度.14.△ABC中,∠A∶∠B∶∠C=1∶2∶3,则△ABC是三角形.15.如图,将周长为15的△ABC沿射线BC方向平移2后得到△DEF,则四边形ABFD的周长为.16.利用两块相同的长方形铁片测量一张桌子的高度.首先按图①方式放置,再交换两铁片的位置,按图②方式放置.测量的数据如图,则桌子的高度是.17.如图,在△ABC中,EF∥BC,∠ACG是△ABC的外角,∠BAC的平分线交BC于点D,记∠ADC=,∠ACG=,∠AEF=,则:
(1)(填“>”、“=”或“<”号);
(2)、、三者间的数量关系式是.二、填空题(每小题3分,共计30分)
11.若方程,用含的代数式表示的式子是:y=。
12.已知是方程的解,则的值为。
13.如图,一个合格的弯形管道,经过两次拐弯后保持平行(即AB∥DC),如果∠C=60°,那么∠B的度数是________度。
14.已知(x+2)2+│2x-3y+13│=0,则的值为。
15.计算:。
16.如图,已知a∥b,小亮把三角板的直角顶点放在直线b上.若∠1=35°,则∠2的度数为。
第13题
17.规定。
18.如图是一块长方形ABCD的场地,长AB=a米,宽AD=b米,从A、B两处入口的小路宽都为1米,两小路汇合处路宽为2米,其余部分种植草坪,则草坪面积为。
19.如图所示,正方形卡片A类、B类和长方形卡片
C类各若干张,如果要拼成一个长为(a+2b)、宽为
(2a+b)的大长方形,则需要C类卡片张。
20.为奖励期末考试中成绩优秀的同学,七年级某班级花62元钱购买了单价分别为9元、5元的A、B两种型号的黑色签字笔作为奖品,则共买了支签字笔。
三、解答题(共计40分)
21.(每小题5分,共10分)解下列方程组:
(1)(2)
22.(4分)如图,在一个10×10的正方形
网格中有一个△ABC。请在网格中画出将△ABC
先向下平移5个单位,再向左平移4个单位
得到的△A1B1C1。
23.(6分)先化简,再求值:
24.(1)如图1,直线AB,CD被直线EF所截,且AB∥CD,根据
可得∠AMN=∠DNM;根据
可得∠BMN+∠DNM=°
(2)如图2,直线AB,CD被直线EF所截,且AB∥CD,MO,NP分别是∠AMN,∠DNM的角平分线,则判断MO与NP的位置关系。
(3)如图3,直线AB,CD被直线EF所截,且AB∥CD,MQ,NQ分别是∠BMN,∠DNM的角平分线,则判断MQ与NQ的位置关系。
(4)对于上面第(2)、(3)两题,请选择其中一题写出结论成立的推导过程。
25.(10分)某商场计划用30000元从厂家购进若干台新型电子产品,已知该厂家生产三种不同型号的电子产品,出厂价分别为:甲型每台900元,乙型每台600元,丙型每台400元。
(1)若商场同时购进甲、乙两种型号的电子产品共40台,恰好用了30000元,则购进甲、乙两种型号电子产品各多少台?
(2)若商场同时购进三种不同型号的电子产品共40台(每种型号至少有一台),恰好用了30000元,则商场有哪几种购进方案?
(3)若商场销售一台甲型电子产品获利200元,一台乙型电子产品可获利150元,一台丙型电子产品可获利100元,在第(2)题的基础上,为使销售时获利最大,则应选择哪种购进方案?
七年级数学试卷参考答案
一、选择题(30分)
1、C2、C3、B4、B5、C6、C7、B8、D9、A10、A
二、填空题(30分)
11、3x-512、113、12014、-815、416、55°17、3x-
418、ab-a-2b+219、520、10
三、解答题(30分)
21、(1)(5分)(2)(5分)
22、略(4分)
23、化简结果-29x+82,-
524、(1)两直线平行,内错角相等两直线平行,同旁内角互补180°(3分)
(2)平行(或MO∥NP)(2分)
(3)垂直(或MQ⊥NQ)(2分)
(4)略(3分)
25、(10分)
(1)(5分)解:设购进甲、乙两种型号电子产品分别为x台,y台。
解得:
答:略
(2)(3分)设购进甲、乙、丙三种型号电子产品分别为x台,y台,(40-x-y)台。
900x+600y+400(40-x-y)=60000化简整理得:5x+2y=140∴y分别可取5,10,15,x分别可取26,24,22,(40-x-y)分别可取9,6,3∴购进方案有三种,分别为:(略)
(3)(2分)方案一获利最大,为6950元,即甲型22台,乙型15台,丙型13台。
以上就是编辑老师为各位同学准备的数学第五单元同步训练题,希望对大家有所帮助!
学习是一个边学新知识边巩固的过程,对学过的知识一定要多加练习,这样才能进步。因此,编辑老师为大家整理了七年级下册数学第五单元同步练习题,供大家参考。
一、选择题(共10小题,每题4分,共40分)
1.计算的结果是()
A.B.C.D.2.如右图,中,过点且
平行于,若,则的度数为()
A.B.C.D.3.天文学上计算星球之间的距离是用“光年”做单位的,1光年就是光在1年内所走过的距离,光的速度约为,1年约为,计算1光年约为多少米用科学记数法表示为()
A.B.C.D.4.的计算结果是()
A.B.C.D.5.下列从左到右变形是因式分解的是()
A.B.C.D.6.下列说法中:①过直线外一点有且只有一条直线与已知直线平行;②若a//b,b//c,则a∥c;
③相等的角是对顶角;④直线外一点与直线上各点连接的所有线段中,垂线段最短。其中正确的有()
A、1个B、2个C、3个D、4个
7.若满足等式,则的值为()
A.B.6C.9D.8.两条直线被第三条所截,则()
A、同位角相等B、内错角相等C、同旁内角互补D、以上都不对
9.如图,长方形相框的外框的长是外框的宽的1.5倍,内框的长是内框的宽的2倍,外框与内框之间的宽度为3.设长方形相框的外框的长为,外框的宽为y,则所列方程组正确的是()
A.B.C.D.10.如果∠A和∠B的两边分别平行,那么∠A和∠B的关系是().A.相等B.互余或互补C.互补D.相等或互补
第四篇:四年级数学下册单元训练(模版)
四年级数学下册单元训练(5)-三角形
学生姓名
辅导老师
易先友
一、用心选一选。
1、一个三角形有()条高。
A、1 B、3 C、无数
2、如果直角三角形的一个锐角是20°,那么另一个角一定是()。A、20° B、70° C、160°
3、自行车的三角架运用了三角形的()的特征。A、稳定性 B、有三条边的特征 C、易变形
4、所有的等边三角形都是()三角形。
A、锐角 B、钝角 C、直角
5、在一个三角形中,∠1=120°,∠2=36°,∠3=()A、54° B、24° C、36°
6、最少用()个相同的三角形可以拼成一个梯形。A、2 B、3 C、4
7、长方形的内角和是()。
A、90° B、180° C、360°
二、按要求做一做。
1、是三角形的打“√”,不是三角形的画“○”。
()()()()()
2、在能拼成三角形的小棒下面画“☆”。(单位:厘米)
()()()
3、按要求分一分。
锐角三角形有()钝角三角形有()直角三角形有()等腰三角形有()
4、画出下面每个三角形底边上的高。
5、在点子图上画出一个等腰三角形和一个直角三角形。
三、求出三角形各个角的度数。
四、解决问题。
1、你能解释为什么吗?
2、从学校到少年宫有几种走法?哪条路最近?为什么?
3、一个一块等腰三角形广告牌,它的一个底角是65°,它的顶角是多少度?
4、王爷爷有一块菜地的形状是近似的等边三角形。如果在菜地的外面围上一圈篱笆,这个篱笆的周长大约是多少?
5、已知∠
1、∠
2、∠3是三角形ABC的三个内角,∠1=48°,∠2=72°,求∠3的度数。
6、下面是三块三角形玻璃打碎后留下的碎片,你能判断出它们原来各是什么三角形吗?
※智慧屋。
()个三角形()个直角三角形
第五篇:高三能力训练六
高三英语能力训练六
完形填空:(共15小题,每小题1分,满分15分)
Today is Friday, the 29th of June.Paul told me something exciting this morning: his father helped the police catch a ___1___ yesterday!When Paul was waiting for the____2____ with his father across the river, he heard some people arguing____3___.He looked around and saw two women and a big man ____4____each other.When Paul‟s father asked what was going on, one of the women said they were tourists and three young men____5____her friend‟s purse when they were buying postcards in a bookstore.The other two had run away, but they _____6____the big man closely.When the ferry arrived, the big man hurried onto the ferry and the two tourists went____7___after him.Paul was angry.He wanted to go up and help the two women.But his father said he didn‟t want to take that ferry.Paul felt rather____8____because he thought his father was afraid of the big man and unwilling to help others!
What Paul saw next changed the____9____ of his father.His father hurried to a nearby ice-cream store and used their phone to ____10____110.He reported the robbery to the police and gave some____11____details about the robber, the tourists and the ferry.When they ___12_____off the next ferry, Paul saw three ____13____around the big guy in handcuffs(手铐)….While Paul was telling me the story, he seemed very____14___.He said he had a better understanding of his father.Although he looked____15____, he was a real hero.1.A.robber
B.theft
C.tourist
D.murderer 2.A.bus
B.ferry
C.ship
D.boat 3.A.kindly
B.angrily
C.closely
D.loudly 4.A.shouting at
B.fighting against C.debating with D.talking wit 5.A.noticed
B.stole
C.seized
D.cut 6.A.caught
B.sought
C.followed
D.surveyed 7.A.abroad
B.back
C.home
D.aboard 8.A.angrier
B.sadder
C.tougher
D.tenser 9.A.feeling
B.idea
C.action
D.belief 10.A.call
B.write
C.answer
D.help 11.A.useful
B.careful
C.fearful
D.terrible 12.A.turned
B.set
C.got
D.took 13.A.women
B.fellows
C.policemen
D.tourists 14.A.delighted
B.proud
C.confident
D.reliable 15.A.outstanding
B.great
C.scared
D.ordinary
阅读理解(共5小题,每小题2分,满分10分)
Even before my father left us, my mother had to go back to work to support our family.Once I came out of the kitchen, complaining, “Mom, I can‟t peel potatoes.I have only one hand.”
Mom never looked up from sewing.“You get yourself into that kitchen and peel those potatoes,” she told me.“And don‟t ever use that as an excuse for anything again!”
In the second grade, our teacher lined up my class on the playground and had each of us race across the monkey bars(攀吊架), swinging from one high steel rod to the next.When it was my turn, I shook my head.Some kids behind me laughed, and I went home crying.That night I told Mom about it.She hugged me, and I saw her “we‟ll see about that” look.The next afternoon, she took me back to school.At the deserted playground, Mom looked carefully at the bars.“Now, pull up with your right arm,” she advised.She stood by as I struggled to lift myself with my right hand until I could hook the bar with my other elbow.Day after day we practiced, and she praised me for every rung(梯级)I reached.I‟ll never forget the next time, crossing the rungs, I looked down at the kids who were standing with their mouths open.One night, after a dance at my new junior high, I lay in bed sobbing.I could hear Mom come into my room.“Mom,” I said, weeping, “none of the boys would dance with me.”
For a long time, I didn‟t hear anything.Then she said, “Oh, honey, someday you‟ll be beating those boys off with a bat.” Her voice was faint and cracking.I peeked out from my covers to see tears running down her cheeks.Then I knew how much she suffered on my behalf.She had never let me see her tears.1.Which of the following expressions can be used most suitably to describe Mom‟s attitude when she made the child to peel potatoes? A.Cruel.B.Serious.C.Strict.D.Cold.2.From the passage, we know monkey bars can help a child train ______.A.the skill to throw and catch things B.the speed of one‟s hand movement C.the strength and skill to hang and sway D.the bodily skill to rotate round a bar 3.What does the sentence “I saw her „we‟ll see about that‟ look” imply? A.Mom believed every aim could be achieved if you stuck to it.B.The race across monkey bars was not difficult enough for a child to give up.C.Mom was determined to prove she herself was better than the teacher.D.What the child had said brought Mom great attraction and curiosity.4.When the child looked down at the kids, they were standing with their mouths open
because ______.A.they felt sorry for what they had done before B.they were afraid the author might fall off and get hurt C.they wanted to see what the author would do on the bars D.they were astonished to find the author‟s progress
5.The most probable conclusion we can draw after reading the passage is ______.A.the last incident was sad enough to make Mom weep B.the child‟s experience reminded Mom of that of her own
C.Mom could solve any problem except the one in the last paragraph D.in fact Mom suffered more in the process of the child‟s growth
1-5.ABDAB
6-10.CDABA 11-15.ACCBD
【答案与解析】文章讲的是一位母亲是如何帮助自己缺一只手的儿子解决成长中的问题。1.C。推理判断题。从他妈妈的话And don‟t ever use that as an excuse for anything again可知他妈妈对他要求很严,即答案选C。
2.C。推理判断题。从had each of us race across the monkey bars, swinging from one high steel rod to the next可知答案C正确。
3.A。推理判断题。第二天妈妈带我去学校帮助我练习monkey bars,可推知妈妈是个很有恒心的人,故答案选A。
4.D。推理判断题。从I‟ll never forget the next time, crossing the rungs, I looked down at the kids who were standing with their mouths open可知同学们对我的表现都很吃惊,即答案选D。5.D。推理判断题。从Then I knew how much she suffered on my behalf.She had never let me see her tears可知对于我的成长中的痛苦妈妈比我承受得还要多,即答案选D。