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  • 1. 简算。                                            

    1. (1) 25×15×4                                         
    2. (2) 50×69×2                                     
    3. (3) (43+43+43+43)×25                                                    
    4. (4) 8×70×125×5                                           
    5. (5) 25×32×125                                           
    6. (6) 64×125                                           

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