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Regrouping with Ones

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  • 28 + 5
    33
  • 32 + 9
    41
  • 16 + 5
    21
  • 32 + 9
    41
  • 44 + 8
    52
  • 37 + 5
    42
  • 29 + 3
    32
  • 85 + 5
    90
  • 57 + 6
    63
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