OML-IZ Search

Fact Families




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Enter the missing fact of the given fact family. You may use the TAB key to move to the next question. When you are done, click Submit.

  1. 8 − 6 = 2
    2 + 6 = 8
    8 − 2 = 6


  2. 6 − 2 = 4
    4 + 2 = 6
    2 + 4 = 6


  3. 1 + 8 = 9
    9 − 1 = 8
    8 + 1 = 9


  4. 9 − 7 = 2
    2 + 7 = 9
    7 + 2 = 9


  5. 4 + 4 = 8


  6. 4 + 5 = 9
    5 + 4 = 9
    9 − 5 = 4


  7. 5 + 3 = 8
    8 − 5 = 3
    3 + 5 = 8


  8. 8 + 1 = 9
    9 − 8 = 1
    1 + 8 = 9


  9. 2 + 1 = 3
    1 + 2 = 3
    3 − 2 = 1


  10. 6 − 0 = 6
    6 + 0 = 6
    6 − 6 = 0



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