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3 addend addition

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  • 7+7+2
    16
  • 2+9+7
    18
  • 4+2+1
    7
  • 12+4+2
    18
  • 8+2+9
    19
  • 2+10+8
    20
  • 6+3+9
    18
  • 2+3+5
    10
  • 1+9+2
    12
  • 2+2+4
    8
  • 5+7+5
    17
  • 2+6+11
    19
  • 6+2+4
    12
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