2018年北师大版小升初数学试卷.pdf

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1、第1页共 21页2018 年北师大版小升初数学试卷1一、选择题每题3 分,共 30 分1 3 分将图中的直角三角形绕最长的边旋转一周可以得到的一个几何体,从正面看这个几何体所得到的平面图形是ABC D2 3 分如果收入 100 元记作+100 元,那么 80 元表示A支出 80 元B收入 20 元C 支出 20 元D收入 80 元3 3 分在一幅地图上用2 厘米的线段表小实际距离80 千米,这幅图的比例尺是A2:80 B1:40 C2:800 D1:40000004 3 分小数 3.976精确到 0.01,正确的答案是A3.9 B4.00 C 3.98 D3.995 3 分将一个正方形纸片依次

2、按图中a,b 的方式对折,然后沿图c 中的虚线剪成图 d 样式,将紙展开铺平,所得到的图形是ABC D6 3 分空气是由多种气体混合而成的,为了简明扼要地介紹空气的组成情况,较好地描述数据,最适合使用的统计图是A扇形统计图B条形统计图C折线统计图D以上三种都可以第2页共 21页7 3 分一个三角形,三个内角度数的比为2:5:3,则此三角形为A锐角三角形B直角三角形C 钝角三角形D无法确定8 3 分如果一些体积为1cm3的小立方体恰好可以组成体积为1m3的大立方体,把所有这些小立方体一个接一个向上摞起来,大概有多高呢?以下选项中最接近这一高度的是A天安门城楼高度B未来北京最高建筑“中国尊”高度C

3、五岳之首泰山高度D国际航班飞行高度9 3 分在长方形 ABCD中放入六个长、宽都相同的小长方形,尺寸如下图,求小长方形的宽 AE 假设设 AE=x cm,依题意可列方程A6+2x=143x B6+2x=x+143x C14=3x6 D6+2x=14x10 3 分如图,某公园有两段路AB=175米,BC=125米在这两段路上安装路灯,要求A,B,C 三点各设一个路灯,相邻两个路灯间的距离都相等则在这两段路上至少要安装路灯个A14 B13 C 12 D11二、填空题每题3 分,共 18 分11 3 分1.2 吨=千克12 3 分的分母加上 14,要使分数大小不变,分子应该13 3 分在一场 NBA

4、的篮球比赛中,我国著名运发动姚明共投篮25 次,6 次未中,他在这场比赛中的投篮“命中率”是文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档

5、编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9

6、G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C

7、10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 H

8、L7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3

9、E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 Z

10、S1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6文档编码:CL9G8V10C10I6 HL7V5U3E9E6 ZS1Y2H7F5S6第3页共 21页14 3 分对于任何数,我们规定符号的意义是:=adbc,那

11、么当=18时,x 的值是15 3分自 2016 年 3 月 1 日起,微信对个人用户的零钱提现功能开始收取手续费每位用户终身享受1000 元免费提现额度,超出部分目前按0.1%收取手续费,每笔最少收 0.1 元小明的妈妈从未提现过,此时想将微信零钱里的15000元提现,那么将收取手续费元163 分 假设将偶数 2,4,6,8,10,12,14,16,依次排成一行:246810121416则从左右数的第 101 个数码是三、判断题每题2 分共 8 分,对的打“”错的打“×”172 分 把一个长方形拉成平行四边形,它的周长不变,面积变大判断对错18 2 分记不超过10 的质数的平均数为M

12、,则与M 最接近的整数是4判断对错19 2 分某校的女生人数与男生人数的比是4:5,则男生人数比女生人数多20%判断对错202 分如果圆柱和圆锥的体积和高都相等,邡么圆锥与圆柱底面半径的比3:1判断对错四、计算写出计算过程.每题 12 分,共 12分21 12 分计算写出计算过程 2.8+5+7.2+37222+2575%70.752100 5622 6 分求未知数1x+1=x文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W

13、6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 Z

14、L6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1

15、M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档

16、编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5

17、G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E1

18、0M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS

19、2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6第4页共 21页2=1+23 6 分列综合算式或方程计算10.21除以的商加上 2.4 乘以的积,和是多少?2一个数的比 160 的 25%多 40,这个数是多少?五、综合应用题24 3 分如图,求阴影部分的面积取 3.1425 3分一个底面半径是10 厘米的圆柱形玻璃杯中装有水,将一个底面直径为 10 厘米的圆锥形铁锤浸没在水中 水未溢出,水面升高了 3 厘米,铁锤的高是多少厘米?2

20、6 4 分学校购买了一批防雾霾口罩,已知甲种口罩每盒150 元,乙种口罩每盒 200 元,学校购买了这两种口罩50 盒,合计花费 8500 元,求甲、乙两种口罩各购买了多少盒?27 5 分一辆小汽车从甲地开往乙地,第一小时行驶了全程的,第二小时行驶了余下的 12.5%,此时离中点还有40 千米,求甲乙两地相距多少千米?28 5 分小明早上从家步行去学校,走完一半路程时,爸爸发现小明的数学书丢在家里,随即骑车去给小明送书,追上时,小明还有的路程未走完,小明随即上了爸爸的车,由爸爸送往学校,这样小明比单独步行提早5 分钟到校小明从家到学校全部步行需要多少时间?文档编码:CR5G8R6E10M7 H

21、S2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8

22、W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10

23、ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G

24、1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文

25、档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR

26、5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E

27、10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6第5页共 21页2018 年北师大版小升初数学试卷1参考答案与试题解析一、选择题每题3 分,共 30 分1 3 分将图中的直角三角形绕最长的边旋转一周可以得到的一个几何体,从正面看这个几何体所得到的平面图形

28、是ABC D【分析】作直角三角形最长边斜边上的高,根据动成线,线动成面,面动成体,将这个直角三角形绕最长的边旋转一周可以得到的一个有两个有共公底的圆锥,且上面圆锥的高小于下面圆锥的高这个立体图形从正面看是有一共公边的等腰三角形,用上面三角形的高小于下面三角形的高【解答】解:如图将图中的直角三角形绕最长的边旋转一周可以得到的一个几何体,从正面看这个几何体所得到的平面图形是故选:B【点评】关键弄清这个直角三形绕最长边旋转后得到的立体图形是什么形状的,再从正面观察是一个什么图形2 3 分如果收入 100 元记作+100 元,那么 80 元表示文档编码:CR5G8R6E10M7 HS2C9L8W6J1

29、0 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O

30、1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W

31、6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:

32、CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R

33、6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7

34、 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9

35、L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6第6页共 21页A支出 80 元B收入 20 元C 支出 20 元D收入 80 元【分析】因为收入与支出相反,所以由收入100 元记作+100 元,可得到 80 元表示支出 80 元【解答】解:如果收入 100 元记作+100

36、 元那么 80 元表示支出 80 元故选:A【点评】此题考查负数的意义,运用负数来描述生活中的实例3 3 分在一幅地图上用2 厘米的线段表小实际距离80 千米,这幅图的比例尺是A2:80 B1:40 C2:800 D1:4000000【分析】要求这幅地图的比例尺,先统一单位,然后根据比例尺的含义,即“比例尺=图上距离:实际距离”,代入数值,进行化简即可【解答】解:80 千米=8000000厘米比例尺是 2:8000000=1:4000000;答:这幅图的比例尺是1:4000000故选:D【点评】此题考查的是比例尺的含义,解答此题的关键是:先统一单位,然后根据比例尺的意义进行解答即可4 3 分小

37、数 3.976精确到 0.01,正确的答案是A3.9 B4.00 C 3.98 D3.99【分析】根据“求一个小数的近似数,要看精确到哪一位,就从它的下一位运用“四舍五入”取得近似值”进行解答即可【解答】解:小数 3.976精确到 0.01,正确的答案是 3.98;故选:C【点评】此题属于易错题,解答此题的关键:要看清精确到的位数,进而用“四舍五入法”进行解答5 3 分将一个正方形纸片依次按图中a,b 的方式对折,然后沿图c 中的虚文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1

38、W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码

39、:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8

40、R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M

41、7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C

42、9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J

43、10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6

44、O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6第7页共 21页线剪成图 d 样式,将紙展开铺平,所得到的图形是ABC D【分析】根据题目要求,严格按照图中的顺序亲自动手操作一下即可【解答】解:严格按照图中的顺序向上对折,向右对折,从右下角剪去一个四分之一圆,从左上角和左下角各剪去一个直角三角形,展开得到结论故选:D【点评】此题主要考查了学生的动手能力及空间想象能力对于此类问题

45、,学生只要亲自动手操作,答案就会很直观地呈现6 3 分空气是由多种气体混合而成的,为了简明扼要地介紹空气的组成情况,较好地描述数据,最适合使用的统计图是A扇形统计图B条形统计图C折线统计图D以上三种都可以【分析】条形统计图能很容易看出数量的多少;折线统计图不仅容易看出数量的多少,而且能反映数量的增减变化情况;扇形统计图能反映部分与整体的关系;由此根据情况选择即可【解答】解:根据统计图的特点可知:空气是由多种气体混合而成的,为了简明扼要地介紹空气的组成情况,较好地描述数据,最适合使用的统计图是扇形统计图;故选:A【点评】此题应根据条形统计图、折线统计图、扇形统计图各自的特点进行解答7 3 分一个

46、三角形,三个内角度数的比为2:5:3,则此三角形为文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9

47、L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J1

48、0 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O

49、1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W

50、6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:CR5G8R6E10M7 HS2C9L8W6J10 ZL6O1G1M1W6文档编码:

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