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dodawanie i odejmowanie do 20

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  • 11 + 9 =
    18
    19
    20
    21
  • 20-20
  • 14 + 6 =
    18
    19
    20
    21
  • 12 + 5 =
    116
    17
    20
    18
  • 6+6
    12
  • 13-3
    10
  • 14 + 5 =
    19
    17
    18
    20
  • 12+8
    20
    17
    19
    21
  • 13+3
    16
  • 17-10
    7
  • 11+ 8 =
    17
    18
    20
    19
  • 14-7
    7
  • 19 - 6 =
    13
    15
    12
    14
  • 7+8
    15
  • 9+9
    18
  • 20 - 8 =
    14
    13
    12
    11
  • 20-9
    11
  • 17 - 2 =
    17
    15
    16
    14
  • 15-8
    7
  • 19 - 8 =
    11
    10
    12
    13
  • 20-10
    10
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