1. Which equation is false?
    1.   6 + 6 = 12
    2.   7 + 7 = 13
    3.   4 + 5 = 9
    4.   6 + 2 = 8
  2. Which equation is false?
    1.   8 - 5 = 3
    2.   7 + 1 = 8
    3.   4 + 5 = 9
    4.   6 - 4 = 1
  3. Which equation is false?
    1.   10 - 4 = 5
    2.   8 - 1 = 7
    3.   6 + 6 = 12
    4.   9 - 7 = 2
  4. Which equation is false?
    1.   3 + 6 = 8
    2.   9 - 4 = 5
    3.   7 - 5 = 2
    4.   8 + 8 = 16
  5. Which equation is false?
    1.   7 + 3 = 10
    2.   10 - 8 = 2
    3.   9 - 4 = 4
    4.   3 - 2 =1
  6. Which equation is false?
    1.   7 + 1 = 8
    2.   5 - 2 = 3
    3.   6 + 3 = 10
    4.   9 - 6 = 3
  7. Which equation is false?
    1.   4 + 4 = 8
    2.   9 + 9 = 18
    3.   9 - 6 = 3
    4.   2 + 7 = 10
  8. Which equation is false?
    1.   4 - 4 = 0
    2.   8 - 5 = 2
    3.   7 + 7 = 14
    4.   5 - 3 = 2
  9. Which equation is false?
    1.   4 + 4 = 8
    2.   5 + 5 = 11
    3.   6 + 4 = 10
    4.   7 - 3 = 4
  10. Which equation is false?
    1.   8 - 4 = 4
    2.   7 + 2 = 8
    3.   6 - 5 = 1
    4.   10 - 5 = 5
  11. Which equation is false?
    1.   9 + 1 = 10
    2.   10 - 4 = 5
    3.   3 + 4 = 7
    4.   8 - 6 = 2
  12. Which equation is false?
    1.   1 + 7 = 9
    2.   4 + 5 = 9
    3.   6 - 3 = 3
    4.   9 - 2 = 7