1. Which fact is related to 7 - 2 = 5 ?
    1.   7 - 1 = 6
    2.   7 - 5 = 2
    3.   4 - 3 = 1
    4.   7 - 3 = 4
  2. Which fact is related to 4 - 3 = 1 ?
    1.   5 - 4 = 1
    2.   4 - 0 = 4
    3.   4 - 2 = 2
    4.   4 - 1 = 3
  3. Which fact is related to 8 - 6 = 2 ?
    1.   5 - 3 = 2
    2.   7 - 5 = 2
    3.   8 - 2 = 6
    4.   8 - 5 = 3
  4. Which fact is related to 6 - 5 = 1 ?
    1.   6 - 1 = 5
    2.   4 - 4 = 0
    3.   8 - 3 = 5
    4.   6 - 3 = 3
  5. Which fact is related to 7 - 4 = 3 ?
    1.   7 - 6 = 1
    2.   8 - 5 = 3
    3.   7 - 2 = 5
    4.   7 - 3 = 4
  6. Which fact is related to 10 - 4 = 6 ?
    1.   10 - 3 = 7
    2.   10 - 6 = 4
    3.   7 - 3 = 4
    4.   6 - 2 = 4
  7. Which fact is related to 8 - 5 = 3 ?
    1.   8 - 3 = 5
    2.   8 - 2 = 6
    3.   4 - 3 = 1
    4.   7 - 4 = 3
  8. Which fact is related to 9 - 2 = 7 ?
    1.   9 - 1 = 8
    2.   8 - 6 = 2
    3.   8 - 4 = 4
    4.   9 - 7 = 2
  9. Which fact is related to 5 - 4 = 1 ?
    1.   4 - 1 = 3
    2.   5 - 1 = 4
    3.   6 - 5 = 1
    4.   4 - 2 = 2
  10. Which fact is related to 9 - 6 = 3 ?
    1.   9 - 4 = 5
    2.   7 - 4 = 3
    3.   9 - 3 = 6
    4.   9 - 2 = 7
  11. Which fact is related to 10 - 7 = 3 ?
    1.   7 - 3 = 4
    2.   6 - 3 = 3
    3.   10 - 3 = 7
    4.   10 - 4 = 6
  12. Which fact is related to 7 - 2 = 5 ?
    1.   7 - 5 = 2
    2.   7 - 3 = 4
    3.   8 - 1 = 7
    4.   5 - 2 = 3