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  • 1. 用竖式计算。                                                                    

    1. (1) 8.5+10.3                                                                 
    2. (2) 7.6+2.2                                                                    
    3. (3) 15.5-10.3                                                                
    4. (4) 27.9-14.8                                                    

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