Most of us learn to add numbers as early as the second grade, and adding simple numbers just becomes second nature to many of us by the time we get older. While adding does become a piece of cake, subtraction is a different story, and no one really likes long subtraction.
Oh! And do not feel bad about using this alternative method of subtraction because you know who else can not directly subtract? Yes, these very smart computers that we use every day can not subtract two numbers without the method of addition.
The video below is a little tutorial that will teach you how and why you can perform subtraction using only addition.
