题目内容

计算下面各题,并用乘法的交换律验算。
(1)      156            验算:
         ×    35        
   
(2)      208             验算:
         ×    44 
    
计算下面各题,并用乘法的交换律验算。
(1)      156            验算:         35
         ×    35                        ×  156  
               780                              210
              468                              175
              5460                             35     
                                                  5460
(2)      208             验算:        44
         ×    44                        ×   208  
               832                              352
              832                             88        
              9152                            9152
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