七年级数学练习卷

第一篇：七年级数学练习卷

1.若不等式组{1+x>a2x-4≤0有解，则a的取值范围是_______.2.不等式4-3x≥2x-6的非负整数解是_________.3.已知关于x的方程2x+4=m-x的解为负数，则m的取值范围是__________.4.若关于x,y的二元一次方程组｛2x+y=3k-1x+2y=-2的解满足x+y＞1，则k的取值范围是___________.5.若关于x的不等式（1-a）x＞2可化为x＜2/1-a,则a的取值范围是____________.6.已知4a-（3x的3-2a次方）＞1是关于x 的一元一次不等式，则该不等式的解集为_________.7.医学中规定：人的心脏每分钟跳动的次数a的正常范围不少于60次，且不多于100次，则a的取值范围可表示为____________.8.若a＜b,则{x＞ax＞b的解集是_________,{x＞ax＜b的解集是___________,{x＜ax＜b的解集是_________,{x＜ax＜b 的解集是___________.9.使式子x/2x-4有意义的x的取值范围是_____________.10.已知3-2x＜1，则化简 |1-x|-|x| 的结果是__________.二．解答题。

11.用若干辆载重为8吨的汽车运一批货物，若每辆汽车只装5吨，则剩下10吨货物。若每辆汽车装满8吨，则最后一辆汽车不空也不满，请问有多少辆汽车？

12.已知自然数c满足8ac-4＜3bc,又 |4a-5| 与（4a-b-2）²互为相反数，求c的值。

第二篇：六年级数学练习卷

六年级数学练习卷

（四）姓名

分数应用题

1、水结成冰时，体积增加1/10，当冰融成水后，体积要减少几分之几？

2、某商店同时卖出两件商品，每件各得30元，其中一件赚20%，另一件亏本20%，这个商店卖出这两件商品是赚钱还是亏本？

3、某处摆着甲、乙两盆花，一群蜜蜂飞来，在甲花上落了1/4，在乙花上落了1/3。假如这群蜜蜂中再有两盆花上蜜蜂之差的3倍的蜜蜂落在花上，则剩下2只蜜蜂，这群蜜蜂共有多少只？

4、小牛乘汽车从县城到省城需2天，他第一天走了全程的1/2又72千米，第二天走的路程等于第一天的1/2，求县城到省城的距离。

5、光明小学六年级有学生360人，其中女生占7/12，后来又转来了几名女生，这样女生占六年级总人数的60%，转来的女生有多少人？

6、甲乙两个养猪专业户共养猪2000头，如果甲卖掉他原有猪的1/4，已卖掉110头，则甲、乙两户剩余的猪的头数相等，甲两户原来积各养猪多少头？

7、人民机械厂加工一批零件，甲车间加工这批零件的20%，乙车间加工余下的25%，丙车间加工再余下的40%，还剩下3600个没加工，这批零件共有多少个？

8、庆丰文具店运来的毛笔比钢笔多1万支，其中毛笔的3/7与钢笔的1/2支数相同，庆丰文具店共运来多少万支笔？

9、四个孩子合买一只60元的小船。第一个孩子付的钱是其他孩子付的总钱数的一半，第二个孩子付的钱是其他孩子付的总钱数的三分之一，第三个孩子付的钱是其他孩子付的总钱数的四分之一，第四个孩子付多少钱？

10、煤气收款员到一幢楼里收煤气差价款，他走出楼时一算，没交款的户数占已交款户数的1/8。如果少收2户，则没交款的户数恰好占已交款户数的1/6，这幢楼有多少住户？

11、某车间生产甲、乙两种零件。生产的甲种零件比乙种零件多12个，乙种零件全部合格，甲种零件只有4/5合格，两种零件合格的一共是42个，两种零件共生产多少个？

12、某车间两个生产小组计划生产680个零件，实际两个小组共生产了798个零件，甲组生产的零件数比本组的任务多生产了1/5，乙组生产的零件仅比本组任务多生产3/20，两个小组原来的任务各是多少个？

13、把105升水注入甲、乙两个容器，可注满甲容器及乙容器的1/2，或可注满乙容器及甲容器的1/3，每个容器的容量各是多少？

14、有三堆棋子，每堆棋子一样多，并且都只有黑白两种棋子。第一堆里的黑子数与第二堆里的白子数一样多，第三堆里的黑子为全部黑子的2/5。把三堆棋子集中在一起，白子为全部棋子的几分之几？

第三篇：七年级英语练习卷2

七年级下英语期末测试题

一.单项选择

(a)1.Beijing is a beautiful city.______ people come here for a visit every day.A.Thousands ofB.Thousand ofC.Thousands

(b)2.–Did you watch the movie last night?

--No, I didn’t, but my mother ______.She loves movies.A.doesB.didC.was

(a)3.–What is the boy like?

--He is very _____ and some people don’t quite like him.A.naughtyB.well-behavedC.friendly

(b)4.We must get there ______.You know, to be late is bad manners.A.in timeB.on timeC.by the time

(c)5.It’s very difficult ______ him ______ the paper plane.A.for;mendB.of;mendingC.for;to mend

(c)6.______?--He was a computer engineer working for Microsoft.A.Who was heB.What was he likeC.What did he do

(a)7.–What do you think of this new film?--______.A.It’s very interestingB.I think soC.I’d love to

(b)8.–What did you ______ when you were a little boy?--We listened to children’s program.A.hearB.listenC.listen to

(b)9.______ comes after October and before December.A.AugustB.NovemberC.January

(b)10.I am not able to play ______ piano but I am able to play ______ football.A.the;theB.the;/C./;the

(ba)11.He decided to be an actor when he finished ______ at the age of 14.A.schoolB.the schoolC.schools

(a)12.The door was ______, but the windows were ______.A.close;openB.closed;openC.closed;opened

(a)13.___ there a band and many young people on the playground yesterday evening?

A.WasB.WereC.Did

(c)14.After that film, the actress became ______.A.popular and popularB.more and more popularC.popularer and popularer

(bc)15.Jim is ______ of the two boys.A.tallerB.the tallestC.the taller

(a)16.Could you help me ______ this big desk to the gate?--Certainly.A.moveB.makeC.do

(a)17.–Can you come to the party?--I’d love to, ______.A.but I’m too busy to go.SorryB.and I’m afraid notC.and you can go

(c)18.Is there going to ______ a sports meeting next Sunday?

A.haveB.isC.be

(c)19.Changjiang River is one of ______ rivers in the world.A.longerB.the longerC.the longest

D21.She likes playing____ violin, but she doesn’t like playing_____basketball.A.the;aB./theC.the;theD.the;/

(c)22 There ______ five tall trees in front of my house when I was eight.A.isnB.areC.wereD.was

(d)23.Don't point ________ others.It's not polite.A．atB．inC．onD．for

(c)24.—where is your mother?—She is cooking lunch in the ______ now.A.bedroomB.bathroomC.kitchenD.living room

(b)25.Please ________ look outside.Look at the blackboard.A.notB.don’tC.aren’tD.can’t

(a)26.----Why are they going to do some sightseeing ?

---______ they like Chinese culture.A.BecauseB.WhenC.IfD.After

(c)27．— When ________ you ________ to China ?— In February, 1999．

A．do, come

B．do, came

C．did, come

D．did, came

(b)28．Shakespeare decided ________ an actor when he was fourteen.A．/B．toC．to beD．to do

(b)29..— What’s your best friend like?—______.A.She is a student

B.She’s nice and friendly.C.She likes doing some sightseeing

D.She doesn’t like anything.(d)30.—Mum, I’ m going to Ann’s party this evening.—_____.A.Why not

B.Good idea

C.Don’t come back late.D.Have a good time

二.从方框中选择介词填空，每词只能用一次

1.Betty was born in Quincy, a town __in____ the east coast of America.2.There is a big garden _in_____ lots of trees behind my house.3.Nelson Mandela was President of South Africa from 1994 _____to_ 1999.4.Goldilocks walked _____into_ the bedroom and found there were three beds.5.Baby Bear cried, ―There’s nothing in my bowl and my chair is ___in___ pieces!‖

6.The three Bears returned but they didn’t notice Goldilocks __at____ first.7.At that time, we had games _____with_ chess, but not computer games.8.We traveled ___with___ train when we needed to go to the east.9.Some _of_____ Shakespeare’s most famous plays are Hamlet and Romeo and Juliet.10.After Zhan Tianyou died, people opened a museum ____when__ his life in Badaling near the Great Wall.三.用所给动词的正确时态填空

1.Lucy, go and see who ___is_singing__ in the next room.(sing)

2.Our family will leave______ for Hainan in three days.(leave

3.They __waited____ until the talk ended.(wait)

4.What time _did_____ you ___get___ up this morning?(get)

5.Be quiet!The baby is ___sleeping___ right now.(sleep)

6.I __won’t listen____ to your excuse for being late again.I will talk to your parents.(not listen)

7.He __has_was___ born in a small town near London 37 years ago.(be)

8.The world __is changing____ all the time.Things never stay the same.(change)

9.We _thinked_____ over your plan.It was a good one.(think)

10.The next year, he __will return____ to his village with a girl.(return)

11.Don’t worry about your daughter.I __will take_ good care of her while you are out.(take)

12.I ____finished__ the work with Lily’s help and I was so thankful to her.(finish)

四.按要求完成句子

1.Did you go to school by bike?（改为同义句）Did you ____ride__ ___a___ _bike_____ to school?

4.Lily had fish and chips for supper yesterday, _did’t_____ __she____?

5.You will come back to see me next year, __won’t____ ___you___?完成反意疑问句

6.There was hardly any room there, _was_____ __there____?完成反意疑问句

11.To swim in this river is very dangerous.（用it作形式主语改写句子）

It is dangerous to swim in this river

12.He is good at playing football.用basketball改为选择疑问句

What is he good at playing football or baskeball?

13.Li Lei played computer games last改为否定句)Li Lei ____didn’t___ _____paly__ computer games last Sunday.14.Was your mother in the kitchen just now?(作肯定回答)____yes___, she ____was___.16． Martin picked some flowers in the park.(对划线部分提问)

_____what__ _____did__ Martin ____do___ in the park?.It is a beautiful flower.(改为感叹句)___what__________a_ beautiful flower it is!

五 完形填空(每小题1分；共10分)

Dickens, one of the greatest English writers, was born in 1of the small towns in England.When Dickens was nine years old, the family moved to London, the 2of England.There were several younger children in the 3.Their life was 4.So Dickens could not go to school.He didnt go to5until his father came out of pris监狱）.At that time he 6already twelve years old.But he did not finish school.Two years 7, he began to work.He often went to the library to 8books.He read a lot.Then Dickens wrote lots of novels and stories all his 9.Dickens died over a hundred years ago.10people are still reading his books with great interest now.(b)1.A.anyB.oneC.someD.a

(d)2.A.cityB.townC.capitalD.country

(d)3.A.schoolB.classC.cityD.family

(b)4.A.goodB.hardC.easyD.wonderful

(a)5.A.schoolB.a schoolC.the schoolD.schools

(a)6.A.wasB.isC.will beD.did

(a)7.A.agoB.beforeC.laterD.since

(d)8.A.seeB.buyC.sellD.read

(d)9.A.moneyB.homeC.classD.life

(b)10.A.ButB.So C.WhyD.While

六.阅读理解

Tanzania(坦桑尼亚)is a country which has a lot of animals, such as gnus(角马), lions, cheetahs(猎豹), elephants, giraffes, crocodiles and so on.Every year, many people in the world travel to this African country to watch the animals closely.But do you know how they travel?

By bus—This is the most common way.When people get on a bus, they’ll find that the bus is a little strange.It is different from the buses we often see.There are no big windows at all, but some small windows.What are they used for? Oh, people can use them to watch animals and those dangerous animals, and take photos.know that people are most interested in lions.So when two buses meet, the drivers will often stop and ask each other if they have found lions.By boatWe can often see many people are in a boat, enjoying the beauty along a river or a lake.And they can also see hippos(河马)and crocodiles and other animals that live in the water.By hot balloon)In the early morning, when the sun is beginning to rise, a large hot balloon is also starting its journey.Taking a hot balloon makes most travelers excited.After some time, the balloon will land safely in a place and the waiters will give people a nice breakfast.But you need to spend a lot of money taking a hot balloon.A person should pay 400 dollars for an hour’s trip.(a)1.How many ways of traveling are mentioned in the passage?A.Three.B.Four.C.Five(c)2.The bus in different from the buses we often see in that ______.A.people can take pictures from the windows

B.drivers often stop and ask each other if they have found lionsC.there were no big windows, but some small windows

(b)3.If you want to watch crocodiles and hippos, it’s best to go ______.A.by busB.by boat

C.by hot balloon

(c)4.People who have a lot of money and want to feel excited can choose to

______.A.take a busB.take a boatC.take a hot balloon

b(a)5.Which of the following is true according to the story?A.The most common way to travel in Tanzania is by boat.B.Tanzania is an African country.C.Taking a hot balloon for a whole morning will cost 400 dollars.

第四篇：七年级数学平面几何练习试卷

平面几何练习题

一.选择题：

1.如果两个角的一边在同一条直线上，另一边互相平行，那么这两个角（）

A.相等 B.互补 C.相等或互补 D.相等且互补

2.如图，l1//l2，ABl1，ABC130，则（）

A.60

B.50

C.40

D.30

A l1 B α l2 C

3.如图，l1//l2，1105，2140，则（）

A.55

B.60

C.65 D.70

l1 α2 l2

4.如图，能与构成同旁内角的角有（）

A.1个 B.2个 C.5个

D.4个

α

5.如图，已知AB//CD，等于（）

A.75

B.80

C.85

D.95

A B 120 ° αC25° D

6.如图，AB//CD，MP//AB，MN平分AMD，A40，D30，NMP等于（）

则

A.10 B.15

C.5

D.7.5

 B MC A N P D



7.如果两个角的两边分别平行，而其中一个角比另一个角的4倍少30，那么这两个角是（）

A.42、138

B.都是10 D.以上都不对



C.42、138或42、10

二.证明题：

1.已知：如图，12，3B，AC//DE，且B、C、D在一条直线上。

求证：AE//BD

A 1 3 E2 4 B C D

CDACBA，2.已知：如图，DE平分CDA，BF平分CBA，且ADEAED。

求证：DE//FB

D F CA

E B

3.已知：如图，BAPAPD180，12。

求证：EF

A 1 B EF C 2P D

4.已知：如图，12，34，56。

求证：ED//FB

F E 4 A G 1 53 DB C 6 2

【试题答案】

一.选择题：

1.C

2.C

3.C

4.C

5.C

6.C

7.D 二.证明题：

1.证：AC//DE

241214AB//CEBBCE180B3

3BCE180AE//BD

2.证：DE平分CDA

1CDA 2

BF平分CBA

FBACBA

ADECDACBAADEFBA

ADEAED

AEDFBADE//FB

3.证：BAPAPD180

AB//CD

BAPAPC

又12

BAP1APC2

即EAPAPF

AE//FP

EF

4.证：34

AC//BD623180

65，21

513180ED//FB

第五篇：七年级数学证明同步练习

由莲山课件提供http:///资源全部免费

8.5～8.6 猜想 证明 同步练习

【基础能力训练】

1．将正数按下列的位置顺序排列，根据图中的规律，2 004应该排在（）

A．M位B．N位C．P位D．Q位

2．仔细观察下面表格中图形的变化规律，“？”处的图是（）

3．下列语句中是命题的是（）

A．画一个角等于已知角B．你讨厌数学吗

C．钝角总大于锐角D．过A点作AB∥CD

4．下列语句中不是命题的是（）

A．2008年奥运会的主办城市是北京B．方程3x－6=0的解是x=2

C．石家庄是河北省的省会D．过P作直线AB的垂线

5．下列命题中假命题有（）

①两个锐角的和等于直角②一个锐角与一个钝角的和等于平角

③如果三个角的和等于180°，那么这三个角中，至少有两个为锐角．

A．0个B．1个C．2个D．3个

6．填空：

（1）判断一件事情的句子叫_______．

（2）数学中每个命题都由_______和_______两部分组成．正确的命题叫______，确的称为_________．

（3）被人们长期的实践所证实，并作为推理依据的事实叫做_______．

（4）用逻辑的方法判断为正确，并作为推理依据的真命题叫做________． 由莲山课件提供http:///资源全部免费 不正•

（5）下列命题：①所有的等腰三角形都相似②所有的等边三角形都相似③所有的直角三角形都相似④所有的等腰直角三角形都相似，其中真命题有______（填序）．

（6）等量公理：

①等量加等量，_______相等，即

如果a=b，那么a+c______b+c；

②等量减等量，差_______，即

如果a=b，那么a－c______b－c；

③等量的同位量相等，即

如果a=b，那么ac________ac；

④等量的同分量________，即

如果a=b，c≠0，那么

⑤等量代换，即

如果a=b，b=c，那么a_______c．

【综合创新训练】

创新应用

7．观察下列等式

12－02=1

2－1=3

32－22=5

42－32=7

„

根据以上计算，你发现了什么规律，请用含有n的式子表示该规律．

8．如图，是小明用火柴搭的1条，2条，3条„ “金鱼”，按此规律搭n•条金鱼需要火柴

数S=_______根．

22ac________bc；

多向思维

9．举反例说明命题“大于90°的角是钝角”是假命题．

10．•将“垂直于同一条直线的两条直线平行”改写成“如果„„那么„„”的形式．

开放探索

11．•七年级

（二）班的数学小组的几位同学正在研究“对于所有正整数n2－3n+13”的值是否都是质数，他们认真验算出n=1，2，3，„，10时，式子n2－3n+13•的值都是质数．部分成员还想继续验算下去，小明同学说：不必再验算下去了，对于所有正整数，式子n2－3n+13的值都是质数．

你赞同小明的观点吗？并请验证一下当n=12的情形．

探究学习

世界七大数学难题

2000年，美国克雷数学研究所悬赏：七大数学难题，每解破一题者，只要通过两年验证期，即颁发奖金100万美元，这七道难题是：

庞加莱猜想：已被朱熹平和曹怀东证明．

霍奇猜想：进展不大．

纳威厄一斯托克斯方程：离解决相差很大．

P与NP问题：没什么进展．

杨─米尔理论：太难，几乎没人做

波奇和斯温纳顿─戴雅猜想：最有希望破解．

黎曼假设：还没看到破解的希望．

答案:

【基础能力训练】

1．D

2．A解析：先竖切一刀，然后横切．

3．C解析：A，D不是判断语句，B是疑问句．

4．D解析：D不是判断语句．

5．D解析：①反例30°+45°≠90°；②反例120°+30°=150°不是平角；• ③在三角形中符合，在多边形中就不正确．

6．（1）命题（2）题设结论真命题假命题（3）公理（4）定理

（5）•②④（6）①和 =②相等 =③=④相等 =⑤=

【创新实践】

7．n2－（n－1）2=2n－1

8．8+6（n－1）

9．反例：180°>90°，180°的角是平角不是钝角；

360°>90°，360°的角是周角不是钝角，所以大于90°的角是钝角是假命题．

10．如果两条直线都垂直于同一条直线，那么这两条直线平行．

11．不赞同．

当n=12时，n－3n+13=12－3×12+13=144－36+13=121

∵121=1×121=11×11

∴121不是质数．