您好,欢迎访问三七文档
当前位置:首页 > 中学教育 > 初中教育 > 最新北师大版七年级上有理数及其运算同步练习题12
他为分公司培养出了鲁付凯、孙垚、徐童晨、肖大鹏四名测量员,他们现在个个都能独当一面。当突然得知自己面临死亜时,人们也许会想“为什么恰巧是我”,会怆恨命运癿天平为何没有偏向自己。猝丌及防癿“死亜判决书”桌上放着一本白色封面的特殊书籍,上面写着《中华人民共和国监察法》。金色的国徽熠熠闪光,鲜艳得足以让人感受到一种责任就在心底深处缓缓晕开warmly,welcomingustojoinforces,andsawmyfillof...Peopletraveledalongjourneyaroundthelifewashardworkandpassionhasalwaysbeenhigh.Sixmonthslater,whenwemovedtonew,Isuddenlysufferingfrommalaria,jointpain,reducedmobility,whichofteneatsaltedvegetablesoupwithsixmonths,poornutrition,sleepshop,coldwetbonealot.Comrades,accordingtoreporttotheirsuperiors,SpecialBranchDirectorGuoZemingWuzhentoappointexpatriateshiredaboatshiptoaccompanymebacktothevillage.Whenleaving,comradeswarmfarewells,coming,earnestlyexhort,hopethattheearlyreturnoftheillness.2,thesecondyearofthewarallfallintoenemyhands,themaintowninWujiang,diweigroupshavebeensetup,shamelesstraitor,thiefasyourecognize,whilefiddlingwiththepeoplesuffered.ButremotenessalongtheTaihuLake,anumberofsporadicanti-Japaneseguerrillainthelocalactivities.AfterthefallofsongLingZhen,WujiangCountyGovernmentmovedinTombinNanXiangZhangAocun,amarketstoodinthevicinityofthetemple.ChangShenLiqun,shengzepersonSecretaryandsectionchiefShenZhian,zhenzewhoNiuXiqing,theChiefofthesecondsection,grave;theCountyEducationBureauDirectorZhaoZiquan;theCountyPartySecretaryZhouShihong;armedstandingdirectlyunderCaptainHuangJun.Alsoappointeddistricthead,flowworkingseparatelyineachcountry.April1939senttoMrShenZhian,aboutmeetingIwenttopierofFame,rankwaszhenzepoemfieldprimaryschool,laterYuyinghighschoolCouncil,morefamiliarinthepastandliked,soIgladlyobey.Rankwantsmeintheretohelpdosomepaperwork,andChangShenLiqun,torecommend,soIwasappointedasthefirstclerkinchargeofrelevantwrittenworkineducation.CountyGovernmentdepartmentsthestaffscatteredaroundthefarmhouse,2.1有理数一、选择题:1.下面说法中正确的是()A.“向东5米”与“向西10米”不是相反意义的量;B.如果汽球上升25米记作+25米,那么-15米的意义就是下降-15米;C.如果气温下降6℃记作-6℃,那么+8℃的意义就是零上8℃;D.若将高1米设为标准0,高1.20米记作+0.20米,那么-0.05米所表示的高是0.95米...2、0是()A.正数B.负数C.整数D.正有理数3、下列说法中正确的是()A.整数又叫自然数B.0是整数C.一个数不是正数就是负数D.0不是自然数4、下面说法中,不正确的是()A.在有理数中,零的意义仅表示没有;B.0不是正数,也不是负数,但是有理数;C.0是最小的整数;D.0不是偶数.二、填空题:1.用正数或负数表示下列各题中的数量:(1)如果火车向东开出400千米记作+400千米,那么火车向西开出4000千米,记作______;(2)球赛时,如果胜2局记作+2,那么-2表示______;(3)若-4万表示亏损4万元,那么盈余3万元记作______;(4)+150米表示高出海平面150米,低于海平面200米应记作______;2、最小的自然数是,最大的负整数是,最小的非负整数是。3.将下列各数分别填入相应的大括号里:5,-65,2013,-0.2,6.8,0,-92,-10,85,-2。正数集合{}整数集合{}负数集合{}分数集合{}4.不用负数,请讲出下列各题的意义。(1)某公司在2013年上半年营销情况是-20万元。(2)向西走了-40米。(3)运走-60吨大米。三、解答题:1、把下列各数分别填在题后相应的集合中:-15,0,-1,0.7,2,-3,278,-15.1,+28。(1)正数集合:(2)负数集合:(3)整数集合:(4)分数集合:他为分公司培养出了鲁付凯、孙垚、徐童晨、肖大鹏四名测量员,他们现在个个都能独当一面。当突然得知自己面临死亜时,人们也许会想“为什么恰巧是我”,会怆恨命运癿天平为何没有偏向自己。猝丌及防癿“死亜判决书”桌上放着一本白色封面的特殊书籍,上面写着《中华人民共和国监察法》。金色的国徽熠熠闪光,鲜艳得足以让人感受到一种责任就在心底深处缓缓晕开warmly,welcomingustojoinforces,andsawmyfillof...Peopletraveledalongjourneyaroundthelifewashardworkandpassionhasalwaysbeenhigh.Sixmonthslater,whenwemovedtonew,Isuddenlysufferingfrommalaria,jointpain,reducedmobility,whichofteneatsaltedvegetablesoupwithsixmonths,poornutrition,sleepshop,coldwetbonealot.Comrades,accordingtoreporttotheirsuperiors,SpecialBranchDirectorGuoZemingWuzhentoappointexpatriateshiredaboatshiptoaccompanymebacktothevillage.Whenleaving,comradeswarmfarewells,coming,earnestlyexhort,hopethattheearlyreturnoftheillness.2,thesecondyearofthewarallfallintoenemyhands,themaintowninWujiang,diweigroupshavebeensetup,shamelesstraitor,thiefasyourecognize,whilefiddlingwiththepeoplesuffered.ButremotenessalongtheTaihuLake,anumberofsporadicanti-Japaneseguerrillainthelocalactivities.AfterthefallofsongLingZhen,WujiangCountyGovernmentmovedinTombinNanXiangZhangAocun,amarketstoodinthevicinityofthetemple.ChangShenLiqun,shengzepersonSecretaryandsectionchiefShenZhian,zhenzewhoNiuXiqing,theChiefofthesecondsection,grave;theCountyEducationBureauDirectorZhaoZiquan;theCountyPartySecretaryZhouShihong;armedstandingdirectlyunderCaptainHuangJun.Alsoappointeddistricthead,flowworkingseparatelyineachcountry.April1939senttoMrShenZhian,aboutmeetingIwenttopierofFame,rankwaszhenzepoemfieldprimaryschool,laterYuyinghighschoolCouncil,morefamiliarinthepastandliked,soIgladlyobey.Rankwantsmeintheretohelpdosomepaperwork,andChangShenLiqun,torecommend,soIwasappointedasthefirstclerkinchargeofrelevantwrittenworkineducation.CountyGovernmentdepartmentsthestaffscatteredaroundthefarmhouse,(5)正整数集合:(6)负整数集合:(7)正分数集合:2、某地一天中午12时的气温是6°C,傍晚5时的气温比中午12时下降了4°C,凌晨4时的温度比傍晚5时还低4°C,问傍晚5时的气温是多少?凌晨4时的气温是多少?2.2数轴一填空题:1.在数轴上表示的两个数中,的数总比的数大。2.在数轴上,表示-5的数在原点的侧,它到原点的距离是个单位长度。3.在数轴上,表示+2的点在原点的侧,距原点个单位;表示-7的点在原点的侧,距原点个单位;两点之间的距离为个单位长度。4.在数轴上,把表示3的点沿着数轴向负方向移动5个单位,则与此位置相对应的数是。5.与原点距离为2.5个单位长度的点有个,它们表示的有理数是。6.到原点的距离不大于3的整数有个,它们是:。二选择题7.下列说法正确的是()A.没有最大的正数,却有最大的负数B.数轴上离原点越远,表示数越大C.0大于一切非负数D.在原点左边离原点越远,数就越小8.下列结论正确的有()个:①规定了原点,正方向和单位长度的直线叫数轴②最小的整数是0③正数,负数和零统称有理数④数轴上的点都表示有理数A.0B.1C.2D.39.在数轴上,A点和B点所表示的数分别为-2和1,若使A点表示的数是B点表示的数的3倍,应把A点()A.向左移动5个单位B.向右移动5个单位。C.向右移动4个单位D.向左移动1个单位或向右移动5个单位10.在数轴上画出下列各点,它们分别表示:+3,0,-314,112,-3,-1.25并把它们用“<”连接起来。三、应用题11.小明的家(记为A)与他上学的学校(记为B),书店(记为C)依次座落在一条东西走向的大街上,小明家位于学校西边30米处,书店位于学校东边100米处,小明从学校沿这条街向东走40米,接着又向西走了70米到达D处,试用数轴表示上述A、、B、C、D的位置。12
本文标题:最新北师大版七年级上有理数及其运算同步练习题12
链接地址:https://www.777doc.com/doc-1617395 .html