• 
•
     25.6854 g  
+      0.17 g 
    ¾¾¾
    25.8554  g  
                                    
25.86 g
round off to two decimal places
The result must be expressed with the same absolute uncertainty
Addition and Subtraction
                                      ( i.e. the same number of digits to the right of the decimal point)
                found in the least precisely   determined quantity used to obtain the result
          (i.e. the factor having the fewest number of digits to the right of the decimal point)
implied precision
± 0.0001g
 ±   0.01  g
± 0.0001g
(± 0.01g)