Practice in Addition of Signed Numbers




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    * Go to easier problems.
    * Go to subtraction problems.
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1st:   Type the arguments. Enter "- 8" as "-8" or get an error.
  +     +   =
 
2nd:   Compute the sum of the numbers yourself.
 
3rd:   Press . The sum is:
Computational code from: Stefan Krumm
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