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10 more and 10 less

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  • Solve 90 - 30
    60
  • Mentally solve 22 - 10
    12
  • Solve 20 + 30
    50
  • Solve 10 - 10
    0
  • Mentally solve 99 + 1
    100
  • What is 10 less than 27?
    17
  • Solve 70 - 30
    40
  • Solve 60 - 50
    10
  • Solve 60 - 40
    20
  • Solve 90 - 70
    20
  • Mentally solve 77 + 10
    87
  • What is 10 more than 48?
    58
  • Solve 20 -10
    10
  • What is 10 more than 87?
    97
  • Mentally solve 43 - 10
    33
  • What is 10 less than 66?
    56
  • Solve 100 - 20
    80
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