You walk (1)/(3) miles to a clothing store. Then you walk another (3)/(8) miles to a grocery store. How many miles have you walked in all?

1/3    + 3/8    

      for adding or subtracting fraactions, you must have a common denominator ( you do not have to do this for multiplication or division)

1/3 = 8/24        3/8 = 9/24

8/24   + 9/24   =   (8+9) / 24  = 17/24 mile