2022年分数加减法简算教案 .pdf

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1、学习好资料欢迎下载人教版五年级下册分数加减法的简便计算汝州市实验小学王利萍学习好资料欢迎下载教学内容：分数加减的简便运算，教科书第119 页例 2 及“做一做”。学习目标：1、我知道整数加法运算定律、减法的性质对分数加减法同样适用。2、我能通过小组合作交流，与同伴一起经历、共享算法。比较熟练地进行分数加减法的简便计算。3、我会认真审题、倾听他人想法，养成合作学习的习惯。教学重点：能运用整数加减法运算定律进行简便运算，养成自觉简算的良好习惯。教学难点：减法性质的运用，能分析题目特点，灵活选择合理的计算方法。教法与学法：教法：引导分析，归纳迁移，指导练习。学法：分析比较，练习反馈教学准备：投影仪、

2、多媒体课件。教学过程：一、创设情境，导入新课1、回顾一下用简便方法计算下列各题。并说出运用什么运算定律。98+57+2+23 12.58.131.87 0.9+0.75+0.1+0.25 5.43（3.431.2）1、2、3 组做4、5、6 组做学生汇报复习情况。预设：a.汇报每题结果。b.第 1、3 题运用了加法交换律和结合律。c.第 2、4 题运用了减法的性质。同学们，这是我们学过的加法的运算定律和减法的性质，还记得吗？2、加法运算定律、减法的性质加法交换律：a+b=b+a 加法结合律：a+b+c=a+(b+c)减法的性质：a-b-c=a-(b+c)a-(b+c)=a-b-c 3、过渡语：

3、这些运算定律适应于整数、小数，那么它们在分数加减中能同样适用吗？这节课我们一起来学习分数加减法的简便运算（师板书课题）4、出示课题：分数加减法的简便计算。请看学习目标，XXX 同学请站起来，大声读一遍。二、出示学习目标：1、我知道整数加法运算定律、减法的性质对分数加减法同样适用。2、我能通过小组合作交流，与同伴一起经历、共享算法。比较熟练地进行分数加减法的简便计算。文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4

4、ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4

5、 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T

6、4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1

7、T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N

8、1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2

9、N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F

10、2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10学习好资料欢迎下载3、我会认真审题、倾听他人想法，养成合作学习的习惯。（投影出示，指一名学生读）要达到学习目标，离不开同学们认真自学，同学们有信心达到学习目标吗？（有）三自学指导过渡语：那就请自学指导来引领我们达到目标，请看自学指导。（投影出示自学指导，师读）出示自学指导认真看课本第 119 页的内容，

11、看题、看图、看文字。重点看黄底色部分的内容，并把例2 填写完整。思考：这两组算式的特点各是什么？这一特点与整数加法的什么运算定理相同？通过比较，你觉得整数加法的交换律和结合律对分数加法适用吗？（3 分钟后，比一比哪个同学展示的好！）四、先学过渡语：（3 分钟后）师：下面老师就来检测一下同学们的自学效果。请看例二：1、学始于疑小强做作业时,碰到了两道比较大小的题目,你能很快的帮他写出答案吗?37+2525+37(23+14)+3423+(14+34)提问：第一组算式的特点是什么？这一特点与整数加法的什么运算定理相同？（第一组算式中，两个加数没有变，只是交换了位置。这一特点与整数加法交换律相同？第

12、二组算式的特点是什么？这一特点与整数加法的什么运算定理相同？（第二组算式中，三个加数没有变，只是改变了运算顺序。这一特点与整数加法结合律相同？通过比较，你觉得整数加法的交换律和结合律对分数加法适用吗？（整数加法交换律、结合律对分数加法同样适用。）2、我的收获整数加法交换律、结合律对分数加法同样适用。3、预习自测在下面空格里填上适当的数，并说明运用了什么运算定律79+45=45+_ 加法交换律29+38+58=29+(38+_)加法结合律文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z1

13、0I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z

14、10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2

15、Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C

16、2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6

17、C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT

18、6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 Z

19、T6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10学习好资料欢迎下载27+34+57+14=(27+_)+(_+_)加法交换律和结合律提问：追问 1：认为第一题括号里的数填对的请举手？认为错的请说出错在哪？追问 2：认为第二题括号里的数填对的请举手？认为错的请说出错在哪？追问 3：

20、认为第三题括号里的数填对的请举手？认为错的请说出错在哪？追问 4：运用加法交换律和结合律时，往往把什么样的分数结合在一起？追问 5：第二小题38+58的结果是写成88恰当还是写成 1 恰当？追问 6：第三小题27+57和34+14的结果是写成77+44恰当还是写成 1+1 恰当？五、合作探究：师：刚才这两道题是看同学们对加法运算定律是否理解。接下来的练习，就要看同学们是否能灵活应用这些运算定律。1、合作探究（一）：先观察分析，再在组内交流算法。说说各运用了什么运算定理，最后共同完成。16+512+712 加法结合律15+37+47+35加法交换律和结合律97+18+38+57加法交换律和结合律

21、（4 分钟后，比一比哪个小组展示的好！）小组展开讨论（议一议，做一做）展示小组合作结果。（重点讲评：遇到和能化成整数的分数，先化成整数再相加。）小妙招应用分数加法的运算定律可以把分母相同的分数先加起来再计算比较简便。如果遇到和能化成整数的分数，先化成整数再相加。过渡语：看来加法的简便运算，大家掌握的非常棒了，那么减法呢？2、合作探究(二)：你会简算吗？把你的想法先和组内的人交流，然后共同完成。13-715-815a-b-c=a-(b+c)910-(110+25)a-(b+c)=a-b-c 3 分钟后，比一比哪组做得最好！小组展开讨论（议一议，做一做）展示小组合作结果。文档编码:CP10P8Z1

22、Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z

23、1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8

24、Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P

25、8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10

26、P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP1

27、0P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP

28、10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10学习好资料欢迎下载过渡语：通过探究合作，分数加减法的简便计算大家已经能初步掌握了，其实，简便运算也

29、有妙招，知道了它，你就拥有了打开分数加减法的简便计算的万能钥匙，想不想知道？（想）好吧，那我就告诉你，可要用心记呀！“简算”有妙招：同级运算可交换符号跟着数来跑括号前面是减号去掉括号要变号师：你会了吗？下面，大家就运用新知识来做一下练习吧。六、当堂检测1、口答：判断下面的计算是否正确，并改正。14+16+3414+35+14+25=14+34+16=(14+14)+(35+25)=1+16=24+1=116()=124()2、用你喜欢的方法计算,比比谁的算法巧。37+815+47+71510-35-2534+29+29179-(89+37)（找出错的讲评）3、江海小学新植了4 块草坪，占地面积

30、分别是45平方米、310平方米、15平方米、710平方米。这 4 块草坪的面积一共是多少平方米？七、拓展延伸用简便方法计算。47+25-47+2549-16+59-56（不讲评，做完后交到组长处。）八、盘点收获提问：同学们，在本节课中，你学到了哪些知识？懂得了什么？有何收获、体会或感想？我的收获1、整数加法交换律、结合律以及减法的性质对分数加法同样适用。2、应用分数加法的运算定律可以把分母相同的分数先加起来再计算比较简便。如果遇到和能化成整数的分数，先化成整数再相加。文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2

31、L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO

32、2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 H

33、O2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7

34、HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7

35、 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M

36、7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1

37、M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10学习好资料欢迎下载3、“简算”小妙招同级运算可交换符号跟着数来跑括号前面是减号去掉括号要变号九、作业：课本 121页第 8 题。文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z

38、10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2

39、Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C

40、2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6

41、C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT

42、6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 Z

43、T6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10文档编码:CP10P8Z1Z1M7 HO2L2F2N1T4 ZT6C2Z10I9Y10