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Dodawanie i odejmowanie do 12

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  • 11 +1
    12
  • 12 - 0
    12
  • 2 + 10
    12
  • 1 + 10
    11
  • 10 +1
    11
  • 10- 1
    9
  • 12-12
    0
  • 11 - 11
    0
  • 10 + 2
    12
  • 11 - 10
    1
  • 10 + 2
    12
  • 11 - 1
    10
  • 1 +11
    12
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