Long Addition & Subtraction

Long Addition & Subtraction is a great way to learn and practice long addition and subtraction.  

Features for long addition:
  1)  2 or 3 numbers to add (addends)
  2)  1 to 6 digits in each addend
  3)  Random or custom user entered problems
  4)  Tutorial animation speed setting
  5)  "Play Tutorial" button to show the step by
      step solution for each problem
  6)  "Hint" button for instructional guidance on
      current step
  7)  "Help" button for automatic completion of
      current step

Features for long subtraction:
  1)  1 to 6 digits
  2)  Random or custom user entered problems
  3)  Tutorial animation speed setting
  4)  "Play Tutorial" button to show the step by
      step solution for each problem
  5)  "Hint" button for instructional guidance on
      current step
  6)  "Help" button for automatic completion of  
      current step

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