福建省莆田市仙游縣第三教研片區(qū)聯(lián)考七年級（上）期末數(shù)學(xué)試卷

1、2013-2014學(xué)年福建省莆田市仙游縣第三教研片區(qū)聯(lián)考七年級（上）期末數(shù)學(xué)試卷一、精心選一選?。ū敬箢}共8小題，每小題4分，共32分每小題給出的四個(gè)選項(xiàng)中有且只有一個(gè)是正確的）12014的相反數(shù)是（）a-2014b-12014c2014d12014顯示解析2下列運(yùn)算正確的是（）a2a+3b=5abb2（2a-b）=4a-bca-（a-b）=-bd-2（a-1）+2a=2顯示解析3下列方程中是一元一次方程的是（）ax+3=y+2bx+3=3-xc1x=1dx2-1=0顯示解析4觀察下列幾何體，從正面看、從左面看、從上面看都是長方形的是（）abcd顯示解析5已知-25a2mb和7a4b3-n是同

2、類項(xiàng)，則2m-n的值是（）a6b4c3d2顯示解析6如圖，對圖中各射線表示的方向下列判斷錯(cuò)誤的是（）aoa表示北偏東15bob表示北偏西50coc表示南偏東45dod表示西南方向顯示解析7若+=90，+=90，則與的關(guān)系是（）a互余b互補(bǔ)c相等d=90+顯示解析8當(dāng)x=2時(shí)，代數(shù)式ax3+bx+1的值為6，那么當(dāng)x=-2時(shí)，這個(gè)代數(shù)式的值是（）a1b-6c3d-4顯示解析二、細(xì)心填一填，相信你填得對！（本大題共8小題，每小題4分，共32分）9計(jì)算2+（-3）=顯示解析10嫦娥三號月球探測器于于2013年12月2日凌晨1時(shí)30分在西昌衛(wèi)星發(fā)射中心發(fā)射升空，“嫦娥三號”開始上升的飛行速度約1080

3、0米秒，把這個(gè)數(shù)據(jù)用科學(xué)記數(shù)法表示為米秒顯示解析11若=75，則的補(bǔ)角等于顯示解析12若x=2是方程2（x-3）+1=x+a的解，則a的值是顯示解析13如圖，將一副直角三角板疊放在一起，使直角頂點(diǎn)重合于點(diǎn)c，若acd=120，則bce=度顯示解析14已知線段ac=10cm，點(diǎn)b是線段ac的中點(diǎn)，點(diǎn)d是線段ac上一點(diǎn)，且bd=2cm，則線段cd的長為顯示解析15如果a3，則|3-a|=顯示解析16觀察下列算式，31=3；32=9；33=27；34=81；35=243；36=729；37=2187；38=6561；通過觀察，用你所發(fā)現(xiàn)的規(guī)律判斷32014的個(gè)位數(shù)字是顯示解析三、解答題：（本題共8大

4、題，計(jì)86分解答應(yīng)寫出必要的文字說明、證明過程或演算步驟）17計(jì)算（1）（-3）（-9）-（-5）；（2）(12)218(1314)(12)顯示解析18解方程（1）2（x+3）=5x；（2）x324x+151顯示解析19如圖，已知a、b、c、d是平面內(nèi)四個(gè)點(diǎn)，請根據(jù)下列要求在所給圖中作圖畫直線ab；畫射線ac；畫線段ad；線段ad與dbc的邊bc交于點(diǎn)o顯示解析20先化簡，再求值（-2x2+4x+5）+（2x2-4+5x），其中x=-1顯示解析21某學(xué)校七年一班有x人，七年二班比七年一班人數(shù)的23少10人（1）用整式表示兩個(gè)班級共有多少人？（2）如果從七年二班調(diào)出8人到七年一班，那么調(diào)動后七年

5、一班的人數(shù)比七年二班多多少人？顯示解析22如圖，點(diǎn)c在線段ab上，點(diǎn)m、n分別是ac、bc的中點(diǎn)ac=8cm，bc=6cm，求線段mn的長顯示解析23某項(xiàng)工程，甲獨(dú)做需24天完成，乙獨(dú)做需12天完成，甲、乙兩人合做6天以后，再由乙繼續(xù)完成，乙再做幾天可以完成全部工程？顯示解析24如圖，aob是平角，om、on分別是aoc、bod的平分線且aoc=40，bod=50求：（1）cod的度數(shù)；（2）mon的度數(shù)顯示解析25如圖，已知數(shù)軸上有a、b、c三個(gè)點(diǎn)，它們表示的數(shù)分別是-24，-10，10（1）填空：ab=，bc=；（2）若點(diǎn)a以每秒3個(gè)單位長度的速度向右運(yùn)動，同時(shí)，點(diǎn)b以每秒1個(gè)單位長度向右

6、運(yùn)動，點(diǎn)c以每秒7個(gè)單位長度向左運(yùn)動問：點(diǎn)a運(yùn)動多少秒時(shí)追上點(diǎn)b？點(diǎn)a運(yùn)動多少秒時(shí)與點(diǎn)c相遇？qcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3p tgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo

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12、aghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi

13、92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2tgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i3

14、0ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawger4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi

15、2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2eo8

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21、gz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawger4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgz7r4i30ka1dkagtgkqcwa3ptgz7r4i30ka1dkaghn3xtkknbycudxqa7fhyi2chhi92tgkqcwa3ptgshls50clmtwn60eo8wgqv7xav2ohum32wgeauwydiawgmer

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