1. Which of the following fractions is NOT equivalent to the others?
    1.   1 / 2
    2.   2 / 4
    3.   3 / 8
    4.   5 / 10
  2. Which of the following fractions is NOT equivalent to the others?
    1.   2 / 5
    2.   4 / 10
    3.   6 / 15
    4.   8 / 18
  3. Which of the following fractions is NOT equivalent to the others?
    1.   5 / 9
    2.   10 / 18
    3.   15 / 22
    4.   20 / 36
  4. Which of the following fractions is NOT equivalent to the others?
    1.   1 / 3
    2.   3 / 9
    3.   7 / 24
    4.   12 / 36
  5. Which of the following fractions is NOT equivalent to the others?
    1.   12 / 18
    2.   24 / 36
    3.   48 / 72
    4.   36 / 50
  6. Which of the following fractions is NOT equivalent to the others?
    1.   10 / 12
    2.   20 / 28
    3.   30 / 36
    4.   50 / 60
  7. Which of the following fractions is NOT equivalent to the others?
    1.   9 / 15
    2.   27 / 45
    3.   16 / 30
    4.   36 / 60
  8. Which of the following fractions is NOT equivalent to the others?
    1.   2 / 24
    2.   6 / 72
    3.   1 / 16
    4.   4 / 48
  9. Which of the following fractions is NOT equivalent to the others?
    1.   5 / 45
    2.   1 / 9
    3.   3 / 15
    4.   6 / 50
  10. Which of the following fractions is NOT equivalent to the others?
    1.   30 / 45
    2.   6 / 9
    3.   2 / 3
    4.   15 / 25