合肥市包河区2013-2014学年度第二学期八年级数学期中试卷(沪科版)(含答案)

relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。八年级数学期中试卷题号一二三总分得分一、选择题（本题共10小题，每小题3分，共30分）题号12345678910答案1.下列式子中，属于最简二次根式的是（▲）A.9B.7C.20D.132.式子1x在实数范围内有意义，则x的取值范围是（▲）A.1xB.1xC.1xD.1x3.七边形内角和的度数是（▲）A.1080B.1260C.1620D.9004.下列二次根式中，与35是同类二次根式的是（▲）A.300B.3.0C.30D.185.下列每一组数据中的三个数值分别为三角形的三边长，不能．．构成直角三角形的是（▲）A.123、、B.6810、、C.51213、、D.325、、6.下列计算正确的是（▲）A．4333=1B.23=5C.12=22D.322=527.用配方法解方程2210xx时，配方后得的方程为（▲）A.2(1)2xB.2(1)0xC.2(1)2xD.2(1)0x得分学校班级姓名考号密封线内不要答题relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。28.若8)2)((baba，则ba的值为（▲）A.4B.2C.4D.42或9.如图，有一长方形鸡场，鸡场的一边靠墙（墙长18米），另三边用竹篱笆围成，竹篱笆的总长为35米，与墙平行的边留有1米宽的门（门用其它材料做成），若鸡场的面积为160平方米，则鸡场与墙垂直的边长为（▲）A.7.5米B.8米C.10米D.10米或8米10.等腰三角形底边上的高为8，周长为32，则它的面积为（▲）A.56B.48C.40D.32二、填空题（共6小题，每小题4分，共24分）11.化简04.0225.12.比较大小：3213（填“”、“”或“=”).13.在实数范围内因式分解：243x=.14.受台风影响，一棵大树从B处被折断，树的顶部落在离树根底部C相距4米的A处，测得60CAB,那么这棵树折断前高为米(31.73)结果保留一位小数，.15.已知m是方程220xx的一个实数根，则22()(1)mmmm的值为.16.如图，O为坐标原点，点1A坐标为(1,0)，以1OA为直角边作等腰直角△12OAA,以2OA为直角边作等腰直角△23OAA，以3OA为直角边作等腰直角△34OAA，…，依此法继续作下去，2015OA=.得分第9题图第14题图第16题图relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel