2026年上海市浦东新区新初一数学入学摸底分班考试模拟卷

新初一数学入学摸底模拟卷学校：__________班级：__________姓名：__________得分：__________2026年上海市浦东新区新初一数学入学摸底分班考试模拟卷含答题卡、答案详解、分步评分标准与压轴提升模块适用对象小学毕业生、新初一入学摸底与分班参考考试时间90分钟满分100分，附加模块20分试卷结构选择题24分，填空题24分，解答题28分，应用题24分考查重点有理数、代数式、方程、几何初步、统计与实际应用考生须知·请在规定时间内独立完成，书写清楚，答题位置规范。·选择题请将答案填入答题表；非选择题应写出必要过程、依据或表达要点。·教师可根据班级实际情况选择整卷检测，也可拆分为基础诊断、能力提升和专项训练模块。·本卷含学生版、答题区、参考答案、评分细则与错因诊断表，适用于开学前后摸底、分层辅导与课堂讲评。

一、选择题（本大题共8小题，每小题3分，共24分）1.|-5|的值是（）A.-5B.0C.5D.102.下列各数中，是负数的是（）A.-1/3B.0C.0.2D.33.若3x-2x=7，则x的值为（）A.5B.6C.7D.84.2026用科学记数法表示为（）A.20.26×10^2B.2.026×10^3C.0.2026×10^4D.202.6×105.一个正方形的边长为a+2，则它的周长是（）A.a+8B.2a+4C.4a+8D.a^2+46.已知∠A=35°，它的余角是（）A.35°B.45°C.55°D.145°7.一组数据2，4，4，6，9的中位数是（）A.4B.5C.6D.98.若m>n，则下列不等式一定成立的是（）A.m-3>n-3B.-m>-nC.2-m>2-nD.m/(-2)>n/(-2)二、填空题（本大题共8小题，每小题3分，共24分）9.计算：36÷(-6)=__________。10.化简：5a+2b-3a+b=__________。11.若x=2是方程2x+k=7的解，则k=__________。12.半径为3cm的圆的周长是__________cm（结果保留π）。13.一个三角形三个内角的度数比为2:3:4，则最大角为__________°。14.若一个数的1/5是12，则这个数是__________。15.小明从家到学校用20分钟，路程为1.6km，他的平均速度为__________km/h。16.观察数列：1，4，9，16，25，……，第10个数是__________。三、解答题（本大题共4小题，每小题7分，共28分）17.计算：(-18)+24÷(-3)-(-5)×2。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________18.解方程：3(2x-1)-4=2x+9。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________19.先化简，再求值：2(a^2-3a)+3(2a-a^2)，其中a=-2。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________20.如图意：点A、B、C在同一直线上，∠DBA=130°，BE平分∠DBC。求∠EBC的度数。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________四、应用题（本大题共3小题，每小题8分，共24分）21.学校图书角有科技书和文学书共180本，科技书本数是文学书的2倍。科技书和文学书各有多少本？________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________22.某文具店购进一批笔记本，进价为每本4元，按每本6元销售。若售出120本后，又将剩余的30本按八折销售。求这批笔记本的总利润。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________23.一辆汽车从甲地到乙地，前2小时行驶了120km，后3小时行驶了210km。求全程平均速度；若返回时平均速度提高到75km/h，返回需要多少小时？________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

附加模块压轴能力提升（20分，可用于分层讲评）A1.已知|x-3|+(y+2)^2=0，求x+y的值。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A2.某班开展阅读活动，第一周读完总页数的1/4，第二周读了剩余页数的1/3，仍剩80页。求全书页数。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A3.判断：能否将1，2，3，4，5，6六个数分别填入等式□+□+□=□+□+□中，使等式成立？请说明理由。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A4.一条线段AB=18cm，点C在AB上，且AC:CB=2:1；点D为AC中点。求DB长度。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

答题卡选择题（1-8）12345678填空题：9.______10.______11.______12.______13.______14.______15.______16.______17.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________18.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________19.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________20.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________21.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________22.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________23.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案与评分细则一、选择题：1.C2.A3.C4.B5.C6.C7.A8.A二、填空题：9.-610.2a+3b11.312.6π13.8014.6015.4.816.100三、解答题解析17.原式=-18-8+10=-16。步骤：先乘除后加减，24÷(-3)=-8，(-5)×2=-10，减去该积为+10。18.3(2x-1)-4=2x+9，6x-3-4=2x+9，4x=16，x=4。19.原式=2a^2-6a+6a-3a^2=-a^2。当a=-2时，原式=-4。20.∠DBC=180°-130°=50°。BE平分∠DBC，所以∠EBC=25°。四、应用题解析21.设文学书x本，则科技书2x本。x+2x=180，x=60，科技书120本。答：科技书120本，文学书60本。22.总购进150本。前120本利润：(6-4)×120=240元；剩余30本售价为6×0.8=4.8元，利润(4.8-