0  428998  429006  429012  429016  429022  429024  429028  429034  429036  429042  429048  429052  429054  429058  429064  429066  429072  429076  429078  429082  429084  429088  429090  429092  429093  429094  429096  429097  429098  429100  429102  429106  429108  429112  429114  429118  429124  429126  429132  429136  429138  429142  429148  429154  429156  429162  429166  429168  429174  429178  429184  429192  447090 

40. 解:原式=2+1-9+1 ································································································ 4分

       =-5 ······································································································ 6分

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39. 解:

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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:只寫后兩步也給滿分.)

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