Study

adding up to 20

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  •  0     0     0

  • 15 + 1 =
    16
  • 14 + 2 =
    16
  • 11 + 7 =
    18
  • 9 + 7 =
    16
  • 12 + 7 =
    19
  • 5 + 5 =
    10
  • 15 + 5 =
    20
  • 8 + 7 =
    15
  • 8 + 8 =
    16
  • 13 + 4 =
    17
  • 10 + 1 =
    11
  • 9 + 9 =
    18
  • 8 + 6 =
    14
  • 10 + 8 =
    18
  • 6 + 5 =
    11
  • 6 + 6 =
    12
  • 12 + 5 =
    17