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Adding 1s 2s and 3s

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  • 15+2
    17
  • 2+12
    14
  • 14+2
    16
  • 5 + 5
    10
  • 1+2
    3
  • 15 + 6
    21
  • 15-3
    12
  • 7 + 1
    8
  • 15+1
    16
  • 4 + 5
    9
  • 4 + 1
    5
  • 6+1
    7
  • 8+2
    10
  • 7 + 6
    13
  • 9 + 2
    11
  • 6+2
    8
  • 14 + 3
    17
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