2014年七年级上学期期中考试数学试卷及答案.pdf

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1、2014 年七年级上学期期中考试试卷一 选择题（每小题 2 分，共 20 分）()1下列各对数中，互为相反数的是:A.2和 2 B.）（和3)3(C.221和 D.55 和()2.下列式子：0,5,73,41,222xcababax中，整式的个数是:A.6 B.5 C.4 D.3()3.一个数的平方和它的倒数相等，则这个数是:A.1 B.1 C.1 D.1 和 0()4下列计算正确的是:A.4812 B.945 C.1091 D.932()5.数轴上点 A,B,C,D 对应的有理数都是整数，若点A对应有理数 a，点 B对应有理数 b，且 b-2a=7,则数轴上原点应是:A.A 点 B.B 点

2、C.C 点 D.D点()6若baba则,032122A.61 B.21 C.6 D.81()7下列说法正确的是：A.0,aaa则若 B.0,0,0baba则若C是七次三项式式子124332yxxy D.mbmamba是有理数，则若,()8方程 1-3y=7 的解是：A.21y B.21y C.2y D.2y()9.一个多项式加上,3332322yxxxyyx得则这个多项式是：A.x3+3xy2 B.x3-3xy2 C.x3-6x2y+3xy2 D.x3-6x2y-3x2y二 填空（每小题 2 分，共 20 分）11绝对值不小于1 而小于 3 的整数的和为；1235的倒数的绝对值是；13若 a、

3、b 互为相反数，c、d 互为倒数，则 2a+3cd+2b=；14用科学记数法表示：2007 应记为；15单项式322yx的系数是，次数是；16nmxyyxmn是同类项，则与若213213；17的值是的解，则是方程若kxkxkx5243；18如果 5x+3与2x+9 是互为相反数，则x2 的值是；19每件 a 元的上衣先提价10，再打九折以后出售的价格是元/件；20观察右图并填下表文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4

4、U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K

5、4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6

6、K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH

7、6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 H

8、H6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6

9、HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6

10、 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9梯 形 个数1 2 3 n图 形 周长5 a8a11a三 计算（每小题 4 分，共 24 分）21）3032324 22）1318142023)313248522 24)41855.257512525）mnnmmnmnnm36245222 26）)32(3)32(2abba四.解答题（每小

11、题 6 分，共 18 分）27先化简，再求值：224231325xxyxyx。其中21,2 yx28解下列方程并检验。五 列方程解应用题（每小题6 分，共 12 分）30把一批图书分给七年级（11）班的同学阅读，若每人分3 本，则剩余 20 本，若每人分 4 本，则缺 25 本，这个班有多少学生？31小明去文具店买铅笔，店主说：“如果多买一些，可以打八折”，小明算了一下，文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B1

12、0W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B

13、10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9

14、B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U

15、9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4

16、U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K

17、4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6

18、K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9如果买 50 支，比原价可以便宜6 元，那么每支铅笔的原价是多少元？六 解答题32的值。求且若baccbaa32,21,0212附加题（每小题10 分，共 20 分,不计入总分）1有一列数按一定规律排列为1，3，5，7，9，如果其中三个相邻的数之和为 201，求这三个数？2计算1201119115

19、1141131121222222一.选择题1）D 2）C 3）A 4）C 5）C 6）D 7）B 8）C 9）C 10）B 二.填空题11）0；12）53；13）3 ；14）2.007103；15）32，3 ；16）0；17）-2；18）-6；19）0.99a；20）3an+2a ；三计算题四解答题当 m=900时，398290094294m（人）五列方程解应用题30）解：设这个班有x 个学生，根据题意得：3x+20=4x-25文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8

20、B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J

21、8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4

22、J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z

23、4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5

24、Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K

25、5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10

26、K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9解得：x=45 答：这个班有 45 人。31）解：设原价为x 元，根据题意得：（1-0.8）x50=6解得：x=0.6 答：原价为 0.6 元。六解答题附加题1解：设三个数中间的一个为x,依题意得：（x-2）+x-(x+2)=-201解得：

27、x=201-(x-2)=-199,-(x+2)=-203答：这三个数为-199、201、-203。2020-2-884058921120121121211191201181614151314121311212119120181641531421311解：原式文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B

28、9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8

29、B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J

30、8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4

31、J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z

32、4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5

33、Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9文档编码:CB3G10T3P7B6 HH6K4U9B10W6 ZL10K5Z4J8B9