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Adding on 10's

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  • 18 + 80 =
    98
  • 29 + 50 =
    79
  • 59 + 30 =
    89
  • 9 + 70 =
    79
  • 50 + 30 =
    80
  • 40 + 20 =
    60
  • 21 + 70 =
    91
  • 49 + 40 =
    89
  • 38 + 50 =
    88
  • 78 + 30 =
    108
  • 33 + 30 =
    63
  • 88 + 20 =
    108
  • 22 + 10 =
    32
  • 72 + 20 =
    92
  • 40 + 50 =
    90
  • 18 + 60 =
    78
  • 79 + 10 =
    89
  • 45 + 40 =
    85
  • 91 + 10 =
    101
  • 8 + 90 =
    98
  • 56 + 60 =
    116
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