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Grade 4 - Calculations with unknowns

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  • ? - 19 = 46
    65
  • 14 - ? = 6
    8
  • 1 + ? = 3
    2
  • ? - 50 = 50
    100
  • 7 - ? = 5
    2
  • ? + 5 = 12
    7
  • ? + 22 = 71
    49
  • 1352 - ? = 829
    523
  • ? + 67 = 67
    0
  • 67 - ? = 0
    67
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