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Adding and Subtracting by 10s

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  • 76 - 40 =
    36
  • 52 + 20 =
    72
  • 11 + 20 =
    31
  • 60 + 40 =
    100
  • 20 + 80 =
    100
  • 47 + 30 =
    77
  • 20 - 0 =
    20
  • 90 - 60 =
    30
  • 34 - 10 =
    24
  • 70 - 40 =
    30
  • 20 + 70 =
    90
  • 43 + 20 =
    63
  • 28 + 50 =
    78
  • 50 - 10 =
    40
  • 25 + 40 =
    65
  • 81 - 30 =
    51
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