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1、学习好资料欢迎下载一元一次方程 Juaney 知识点讲授（1）重温一元一次方程解题步骤去分母去括号移项合并同类项系数化为1 例 1.（1）22431xx（2）3121xx易错注意点：去分母时记得将分子部分看成一个整体进行括号。（2）用一元一次方程求解实际问题a、用列方程的方法解决实际问题的一般思路是分析数量关系，列出方程。b、列方程的实质就是用两种不同的方法来表示同一个量。单位统一c、列方程解应用题的一般步骤是设未知数，列方程，解方程，求出方程的解。d、实际问题中的数量关系比较隐蔽，关键是审题，弄清问题背景，分析清楚数量关系，特别是找出可以作为列方程依据的相等关系。路程=时间速度工作总量=工作
2、效率工作时间顺水航速=静水速度+水流速度，顺水航速=静水速度水流速度。利润=售出价成本价，利润率=利润/成本价100%如果一个两位数十位数字是a，个位数字是b，则这个两位数是：10a+b 题型归类：A、行程问题B、工程问题C.比例分配问题D.数字问题、利润率问题和、差、倍的关系G 等积变形问题：学习好资料欢迎下载H、劳力调配问题小结在小学，学生对应用题的学习还是比较久的，量也比较大，但是很多教师却没有对其题型进行统一分类，这样就导致很多需要记忆的东西，而学生一旦记不住就无法理解了。怎样引导学生由记忆性思维转化为理解性思维，这是本次课所要解决的主要问题。教师需要通过题型的分类来帮助学生梳理知识点
3、，这样对于其他应用题也能游刃有余了。课堂练习A、行程问题解题指导（1）行程问题中的三个基本量及其关系：路程=速度 时间。（2）基本类型有1）相遇问题；2）追及问题；常见的还有：相背而行；行船问题；环形跑道问题。（3）解此类题的关键是抓住甲、乙两物体的时间关系或所走的路程关系，一般情况下问题就能迎刃而解。并且还常常借助画草图来分析，理解行程问题。、（相向相遇）甲、乙两站相距280 千米，一列慢车从甲站出发，每小时行驶60 千米，一列快车从乙站出发，每小时行驶80 千米，问两车同时开出，相向而行，出发后多少小时相遇？某汽车和电动车从相距298 千米的两地同时出发相对而行，汽车的速度比电动车速度的6
4、 倍还多 15 千米，半小时后相遇。求两车的速度。（同向追击）甲车在早上5 时以每小时32 千米的速度由A 地向 B 地行驶，6 时 30 分乙车才开始出发，结果在9 时 30 分时乙车追上了甲车，问乙车的速度是多？文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R
5、10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9
6、 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5
7、J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1
8、文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:C
9、Y2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1
10、R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 H
11、D10D4R10L3T9 ZT5V5J6J6A1学习好资料欢迎下载（先同向后相向）一个自行车队进行训练，训练时所有队员都以35 千米/时的速度独自前进，突然，1 号人员以 45 千米/时的速度独自行进，行进10 千米后掉转车头仍以45 千米/时的速度往回骑，直到与其他队员会合。1 号队员从离队开始到与队员重新会合，经过了多少时间？（环形跑道上的相遇）400m 的环形跑道，男生每分钟跑 320 米，女生每分钟跑 280米，男女生同时同地同向出发，t 分钟首次相遇，则t 为多少？（注：环形跑道，同地反向而行的等量关系是两人走的路程和等于一圈的路程；同地同向而行的等量关系是两人所走的路程差等于一圈的
12、路程。）（船在水中的航行）一轮船航行于两个码头之间，逆水需10 小时，顺水需6 小时。已知该船在静水中每小时航行 12 千米，求水流速度。B.工程问题工程问题中的三个量及其关系为：工作总量=工作效率 工作时间经常在题目中未给出工作总量时，设工作总量为单位1。一项工程，甲单独做20 天完成，乙单独做10 天完成，现在由乙先独做几天后，剩下的部分由甲独做，先后共话12 天完成，问乙做了几天？解放军战士在一次施工中，要运回75 吨砂子，现出动大、小两种汽车17辆，大小汽车每辆各运砂5 吨/次、3 吨/次，这些砂子正好一次运完，问大、小汽车各几辆？文档编码:CY2D6O1R4G3 HD10D4R10L
13、3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT
14、5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J
15、6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编
16、码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D
17、6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G
18、3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10
19、D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1学习好资料欢迎下载C.比例分配问题这类问题的一般思路为：设其中一份为x,利用已知的比，写出相应的代数式。常用等量关系：各部分之和=总量。9.甲、乙、丙三辆卡车所运货物的吨数比是6：7：4.5，已知甲车比丙车多运货物 12
20、吨，则三辆卡车共运货物多少吨。10.若三个数的和是 144，这三个数的比是2：3：7，则这三个数分别是什么？D.数字问题要搞清楚数的表示方法：一个三位数的百位数字为a，十位数字是b，个位数字为c（其中 a、b、c 均为整数，且1a9,0 b9,0 c9）则这个三位数表示为：100a+10b+c。11.有一列数，按一定规律排列成4，8，12，16，20，24，其中某三个相邻数的和是672，求这三个数各是多少？一个两位数，十位上的数字与个位上的数字之和为11，如果把十位上的数字与个位上的数字对调，那么得到的新数就比原数大63，求原来的两位数。四个连续的奇数的和为32，这四个数分别是什么？利润率问题
21、14.某种商品因换季准备打折出售，如果按定价的七五折出售将赔25 元，而按定价的九折出售将赚 20 元，问这种商品的定价是多少？15.某种品牌电风扇的标价为165 元，若降价以九折出售，仍可获利10%（相对于成本价），那么该商品的成本价是多少？文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6
22、O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3
23、 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D
24、4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3
25、T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5
26、V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6
27、A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码
28、:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1学习好资料欢迎下载和、差、倍的关系这类问题主要应搞清各量之间的关系，注意关键词语。（1）倍数关系：通过关键词语是几倍，增加几倍，增加到几倍，增加百分之几，增长率来体现。（2）多少关系：通过关键词语 多、少、和、差、不足、剩余来体现。16.一个矩形的周长是16cm,长比宽多 2cm,那么长是（）A.5cm B.7cm C.9cm D.10cm 17.数 x 的 43%比它的一半还少 7，则列出求 x 的方程是（）A.7)21%(43xB.721%43xC.721%43xxD.xx%4372118、小强比他叔叔小30 岁，
29、而两年前，小强的年龄是他叔叔的41，求小强叔叔今年的年龄。19、两个村共有834 人，甲村的人数比乙村的人数的一半还少111 人，两村各有多少人？20、用一根长80m 的绳子围出一个矩形，使它的宽是长的31，长和宽各应是多少？G 等积变形问题：等积变形 是以形状改变而体积不变为前提。常用等量关系为：原料体积=成品体积。例 21、现有直径为0.8 米的圆柱形钢坯30 米，可足够锻造直径为0.4 米，长为3 米的圆柱形机轴多少根？H、劳力调配问题：这类问题要搞清人数的变化，常见题型有（1）既有调入又有调出。（2）只有调入没有调出，调入部分变化，其余不变；（3）只有调出没有调入，调出部分变化，其余不
30、变。例 22、有两个工程队，甲队有 285 人，乙队有 183人，若要求乙队人数是甲队人数的，应从乙队调多少人到甲队？文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9
31、ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J
32、6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文
33、档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY
34、2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R
35、4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD
36、10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1学习好资料欢迎下载例 23、甲、乙两个工程队分别有
37、188 人和 138 人，现需要从两队抽出116 人组成第三个队，并使甲、乙两队剩余人数之比为2：1，问应从甲、乙两队各抽出多少人？例 24、李明今年8 岁，父亲是32 岁，问几年以后父亲的年龄为李明的3 倍。文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L
38、3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT
39、5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J
40、6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编
41、码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D
42、6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G
43、3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1文档编码:CY2D6O1R4G3 HD10D4R10L3T9 ZT5V5J6J6A1