แบบฝึกหัด

 
    ข้อ 1                                 ข้อ 4        
 
    5.658                               25.356
             +                                       +
    2.557                               10.481
    _____                               _____   
                    
 
     ข้อ 2                                ข้อ 5
     4.889                             74.222
              +                                     +
     1.548                           142.554
    _____                              ______
 
 
     ข้อ 3                                ข้อ 6
      5.200                          192.644
               +                                     +
    11.111                          421.554  
    ______                          ______
 
 
 
 

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