- 2/3 < -2/4 < -2/5 < -2/6 < -2/7 > 0 < 1/9 < 1/8 < 1/7 < 1/6 < 1/5 < 1/4

Ten rational numbers between -2/3 and 1/4 are: -2/4, -2/5, -2/6, -2/7, 0, 1/9, 1/8, 1/7, 1/6 and 1/5.