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Mental Math Add and Subtract

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  • 100-30
    70
  • twenty - eleven
    nine
  • 5+15
    20
  • 4+6
    10
  • forty five - fifteen
    thirty
  • 30-15
    15
  • 88-44
    44
  • 45+15
    60
  • 12+8
    20
  • 50-25
    25
  • 66-60
    6
  • one hundred - fifty
    50
  • Twenty two - eleven
    11
  • 35-15
    20
  • thirty - ten
    twenty
  • 60-20
    40
  • twelve - six
    6
  • 7+3
    10
  • eighty three + seven
    90
  • Sixteen + four
    20
  • thirty three + twenty seven
    60
  • nineteen - nine
    10
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