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速算(2) 個位的進位加法

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  • 9 + 4 =
    13
  • 8 + 5 =
    13
  • 5 + 5 =
    10
  • 8 + 7 =
    15
  • 6 + 6 =
    12
  • 6 + 4 =
    10
  • 7 + 9 =
    16
  • 6 + 5 =
    11
  • 6 + 8 =
    14
  • 9 + 6 =
    15
  • 9 + 8 =
    17
  • 7 + 7 =
    14
  • 7 + 6 =
    13
  • 5 + 7 =
    12
  • 9 + 9 =
    18
  • 8 + 8 =
    16
  • 3 + 9 =
    12
  • 9 + 7 =
    16
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