Question

A soda container holds 51\2 gallons of soda .how many

Answer 1

If the Soda holds 51/2 Of a gallon of Soda you need to 51 by 2 which is 25.5
   2
2[51
  -4
  ----

then add the 1 
   25
2[51
  -4            2x5 equals 10
  ----
   11
-  10
  ------
       1        half of 2 is 1 half of 1 is 0.5  1 is your remainder 1 equals 0.5 
                 25 + 0.5 equals 25.5 that's how many gallons you have. :)