1. Which equation is true?
    1.   4 + 6 = 10
    2.   3 + 5 = 7
    3.   7 - 3 = 6
    4.   2 + 7 = 10
  2. Which equation is true?
    1.   6 + 4 = 9
    2.   7 - 5 = 3
    3.   9 - 3 = 7
    4.   4 - 2 = 2
  3. Which equation is true?
    1.   8 - 5 = 2
    2.   4 + 4 = 9
    3.   6 + 6 = 12
    4.   4 + 5 = 8
  4. Which equation is true?
    1.   10 - 2 = 6
    2.   9 - 3 = 6
    3.   5 + 4 = 10
    4.   3 + 4 = 8
  5. Which equation is true?
    1.   10 - 1 = 8
    2.   6 + 3 = 10
    3.   4 + 3 = 7
    4.   8 - 1 = 5
  6. Which equation is true?
    1.   9 + 9 = 15
    2.   3 + 6 = 7
    3.   2 + 7 = 9
    4.   8 - 4 = 3
  7. Which equation is true?
    1.   5 + 5 = 10
    2.   10 - 5 = 4
    3.   7 + 3 = 9
    4.   9 - 1 = 6
  8. Which equation is true?
    1.   2 + 3 = 6
    2.   1 + 3 = 4
    3.   6 - 3 = 2
    4.   7 - 5 = 4
  9. Which equation is true?
    1.   9 - 4 = 6
    2.   10 - 2 = 8
    3.   5 + 4 = 8
    4.   3 - 1 = 1
  10. Which equation is true?
    1.   4 + 4 = 9
    2.   7 + 7 = 11
    3.   5 - 2 = 3
    4.   6 - 4 = 1
  11. Which equation is true?
    1.   10 - 4 = 7
    2.   10 - 9 = 1
    3.   6 + 0 = 7
    4.   3 + 5 =9
  12. Which equation is true?
    1.   8 - 3 = 4
    2.   8 - 7 = 2
    3.   3 + 3 = 6
    4.   9 - 5 = 1