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  • 1. 脱式计算。                                           

    1. (1) 2400÷80-14×2                                     
    2. (2) 108-(83+360 ÷60)                              
    3. (3) (422+58)÷(375-345)                                  
    4. (4) 420÷[(205-198)×4]                           
    5. (5) 460÷(29-18÷3)                               
    6. (6) 1450÷[ 2×(16+9)]                         

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