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Math Fluency (Mod 4, Lesson 11)

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  • 77 - 55 = ?
    22
  • 40 + 50 = ?
    90
  • 22 - 11 =?
    11
  • 55 + 44 = ?
    99
  • 33 - 22 = ?
    11
  • 33 + 22 = ?
    55
  • 55 - 11 = ?
    44
  • 50 + 20 = ?
    70
  • 90 - 30 = ?
    60
  • 99 - 22 = ?
    77
  • 40 + 40 = ?
    80
  • 30 - 10 = ?
    20
  • 66 + 11 = ?
    77
  • 33 + 44 = ?
    77
  • 80 - 40 = ?
    40
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