Study

adding 3 numbers

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  • 3 + 2 + 3 =
    8
  • 1 + 2 + 1=
    4
  • 8 + 3 + 8 =
    19
  • 4 + 4 + 3 =
    11
  • 8 + 2 + 4 =
    14
  • 5 + 5 + 2 =
    12
  • 7 + 4 + 7 =
    18
  • 6 + 6 + 1 =
    13
  • 9 + 9 + 2 =
    20
  • 9 + 1+ 9 =
    19