0  417117  417125  417131  417135  417141  417143  417147  417153  417155  417161  417167  417171  417173  417177  417183  417185  417191  417195  417197  417201  417203  417207  417209  417211  417212  417213  417215  417216  417217  417219  417221  417225  417227  417231  417233  417237  417243  417245  417251  417255  417257  417261  417267  417273  417275  417281  417285  417287  417293  417297  417303  417311  447090 

38.

解:原式=

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37.

解:原式

      

      

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36. 解:原式=-2+1………………………………………………6分

        =3-(2-)+1……………………………………………7分

        =2+………………………………………………………8分

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35.    

解:=·············································································· 4分

     =0 ·················································································································· 6分

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34. 解:原式

           

             

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33.  解:原式=5+1-=5

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32. 解:原式= 2-+-1  =1.

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31. 解: 原式=        

      =              

       =1                    

   (注:只写后两步也给满分.)

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30. 解:原式·················································································· 4分

········································································································· 5分

   6分

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29. 解:

·················································································································· 4分

.  6分

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