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Сложение и вычитание до пр ...

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  • 6-5=
    1
  • 10-1=
    9
  • 6+0=
    6
  • 6+3=
    9
  • 10-6=
    4
  • 4+1=
    5
  • 2+9=
    11
  • 1+8=
    9
  • 5+5=
    10
  • 6-4=
    2
  • 10-7=
    3
  • 2+6=
    8
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