人教版九年级数学上学期第一次月考试卷（含答案）

Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students ' knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students ' weaknesses in each knowledgeput it as a review of key, combined with the problem of textbooks to reviewboth to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, \arnestly do a problem learning a method, class of pass was to get \s. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, light, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup method九年级数学上学期第一次月考试卷

一、选择题（本大题共有10小题，每小题3分，共30分）

1.如果a为任意实数, 下列各式中一定有意义的是…………………………………………（ ） A.a B.?a2 C.a2?1 D.a2?1 2.下列各式中，属于最简二次根式的是…………………………………………………………（ ） A.x2?y2 B.xy1 C.12 D.1 x23.下列方程，是一元二次方程的是………………………………………………………………（ ）

22①3x?x?20 ②2x?3xy?4?0 ③x?21x?4 ④x2?0 ⑤x2??3?0 x3 A.①② B.①②④⑤ C.①③④ D.①④⑤

4.若

x3?x?x，则x的取值范围是……………………………………………………（ ） 3?x A.x<3 B. x?3 C.0?x<3 D.x?0

5.方程(x?3)?(x?3)的根为………………………………………………………………（ ） A.3 B.4 C.4或3 D.?4或3

6.用配方法解方程x2?8x?7?0,则配方正确的是……………………………………………（ ） A.?x?4??9 B.?x?4??9 C.?x?8??16 D.?x?8??57 7.关于x的一元二次方程(a?1)x?x?a?1?0的一个根为0，则a的值为……………（ ） A.1 B.－1 C.1或－1 D.

222222221 28.三角形两边长分别是8和6，第三边长是一元二次方程x?16x?60?0的一个实数根，则该三角形的面积是……………………………………………………………………………………（ ） A.24 B.48 C.24或85 D. 85

9.下列二次根式中, 与3是同类二次根式的是………………………………………………（ ） 2 310.某农场的粮食产量在两年内从2800吨增加到3090吨，若设平均每年增产的百分率为x，则所列的方程为…………………………………………………………………………………………（ ）

A. 18 B. 12 C. 6 D.

A.2800?1?x??3090； B.?1?x??290；

2Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students ' knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students ' weaknesses in each knowledge, put it as a review of key, combined with the problem of textbooks to reviewboth to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, \arnestly do a problem learning a method, class of pass was to get \s. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, light, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup methodC.2800?1?x??3090 D.28001?x2?2??3090

二、填空题（本大题共有10小题，每小题3分，共30分）

11．x?10x? ?(x? ).

12．在直角坐标系内，点P（5，5）到原点的距离为 . 13. 若a2?3,b?2,且ab?0,则a?b? .

14．10在两个连续整数a和b之间，且a?10?b，那么a、b的值分别是 . 15．已知一元二次方程x+3x+m=0的一个根为-1，则另一个根为__________.

16．某矩形的长为a ，宽为b ，且（a＋b）（a＋b＋2）＝8，则a＋b的值为 _。 17．已知关于x的方程(x?2)2?m?1有解，则m的取值范围是 .

18．观察分析下列数据，寻找规律：0，3，6，3，23，15，32，…… ，那么第10个数据应是 .

19．已知方程x?7x?12?0的两根恰好Rt△ABC的两条边的长，则Rt△ABC的第三边长为 . 20. 一个两位数，个位数字比十位数字大3，个位数字的平方刚好等于这个两位数，则这个两位数是 .

22

22三、解答题（本大题共有8小题，共60分）

21．（本题满分6分）计算： （1）

613)?27 (3?2)?(2?27) （2）(48?424

22．（本题满分6分）用适当的方法解下列方程：

2（1）(3x?1)?(x?1) （2）2x?x?221?0 2

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23．（本题满分5分）若x=1是方程mx＋3x＋n=0的根，求(m－n)＋4mn的值。

2

Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students ' knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students ' weaknesses in each knowledge, put it as a review of key, combined with the problem of textbooks to reviewboth to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, \arnestly do a problem learning a method, class of pass was to get \s. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, light, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup method24.（6分）某药品经过两次降价，每瓶零售价由100元降为81元，已知两次降价的百分率相同。求每次降价的百分率。

25．（本题满分7分）已知a、b、c满足a?8?b?5?c?18 ⑴求a、b、c的值；

⑵试问以a、b、c为边能否构成三角形？若能构成三角形，请求出三角形的周长，若不能，请说明理由。

26．（本题满分8分）已知a、b、c是△ABC的三条边，关于x的一元二次方程

??2?0

121x?bx?c?a?0有两个相等的实数根，方程3cx?2b?2a的根为x=0。 22（1）试判断△ABC的形状。

（2）若a、b为关于x的一元二次方程x＋mx－3m=0的两个根,求m的值。

2

人教版九年级数学上学期第一次月考试卷 第 3 页 共4页

Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students ' knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students ' weaknesses in each knowledge, put it as a review of key, combined with the problem of textbooks to reviewboth to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, \arnestly do a problem learning a method, class of pass was to get \s. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, light, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup method27.（10分）有一面积为150m的长方形鸡场，鸡场的一边靠墙（墙长18 m），另三边用竹篱笆围成，如果竹篱笆的长为35 m，求鸡场的长与宽各为多少；

2

D A C B 28．（本题满分12分）三门旅行社为吸引市民组团去蛇蟠岛风景区旅游，推出如下收费标准：

如果人数超过35人，如果人数不超过每增加1人，人均旅35人，人均旅游游费用降低2元，但费用为150元 人均旅游费用不得 低于120元

某中学九(一)班去蛇蟠岛风景区旅游，共支付给三门旅行社旅游费用5888元，请问该班这次共有多少名同学去蛇蟠岛风景区旅游？

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Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students ' knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students ' weaknesses in each knowledge, put it as a review of key, combined with the problem of textbooks to reviewboth to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, \arnestly do a problem learning a method, class of pass was to get \s. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, light, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup method人教版九年级数学上学期第一次月考试卷答案

一、选择题（本大题共有10小题，每小题3分，共30分） 题号 答案 1 C 2 A 3 D 4 C 5 C 6 B 7 B 8 C 9 B 10 C 二、填空题（本大题共有10小题，每小题3分，共30分）

11. 25 ，5 ； 12. 52 ； 13. -7 ； 14. a=3 ，b=4 ; 15. -2； 16. 2； 17. (-b , a)； 18. 33； 19. 5或7 ； 20.25或36 . 三、解答题（本大题共有8小题，共90分．） 21.⑴

111413?2 ⑵?2 44312?1?5?1?5,x2? 442

2

22.⑴x1?0,x2?1 ⑵x1?23.由题意得：m ＋ n = －3, 所以（m － n ）＋ 4mn = (m ＋ n )= 9 24. 10%

25.⑴ a=8=22 b=5 c=18= 32

⑵∵a＜b,c＜b, a＋c＞b ∴能构成三角形，此时三角形的周长为5 ＋ 52 26.（1）ABC为等边三角形 ； （2）m=－12 27. 长15m 宽10m 28．（本题10分）

解：∵5888不是150的整数倍，

∴人数超过了35人．

设去旅游的人数为x人． [150﹣（x﹣35）×2]x=5888， x 2 ﹣110x=﹣2944， （x﹣55） 2 =81

x﹣55=9或x﹣55=﹣9 解得 x=64或x=46．

但当x=64时，应付费用为：64×120=7680，不符合题意；

x=46时，应付费用为：46×[150﹣（46﹣35）×2]=5888，符合题意； ∴x=46．

答：该班这次共有46名同学去方特欢乐世界旅游．

人教版九年级数学上学期第一次月考试卷答案 第1页，共1页

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