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Adittion and subtraction

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  • 14 - 7 = ?
    7
  • 18 - 19 = ?
    1
  • 13 - 7 = ?
    6
  • 20 - 15 = ?
    5
  • 12 + 15 = ?
    27
  • 2 + 19 =?
    21
  • 30 - 22 = ?
    8
  • 15 + 8 = ?
    23
  • 22 - 10 =?
    12
  • 30 + 15 = ?
    45
  • 10 + 15 =?
    25
  • 18 + 19 = ?
    37
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