• Subtraction

  • Symbol: "-"

  • Rule: 
    Minuend - Subtrahend = Difference
    + The minuend must be greater than or equal to the subtrahend 
    

  • Ways to subtract

    1. More on the TOP?
       No need to STOP.
       75
       -22
       53
       
    2. Numbers the SAME?
       ZERO the game!!!
       82
       -22
       60
       
    3. More on the FLOOR?
       Go to the next DOOR,
       And get 10 MORE.
       25
       - 9
       16
       

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