Answer:Column A 1. 4/5 - 4/52. 3/5 - 2 1/43. 2 1/2 - 2/64. 7/10 - 2 1/55. 4 5/8 - 1 3/8 Column B A. 1 7/20B. 3 1/4C. 1 2/5D. 3 1/8E. 5 2/5F. 2 1/2 Solutions: 1. 4/5 - 4/5 = 0 (Answer: Not listed in Column B)2. 3/5 - 2 1/4 = 3/5 - 9/4 = 12/20 - 45/20 = -33/20 = -1 13/20 (Answer: Not listed in Column B)3. 2 1/2 - 2/6 = 5/2 - 2/6 = 15/6 - 2/6 = 13/6 = 2 1/6 (Answer: F)4. 7/10 - 2 1/5 = 7/10 - 11/5 = 7/10 - 22/10 = -15/10 = -1 1/2 (Answer: Not listed in Column B)5. 4 5/8 - 1 3/8 = 37/8 - 11/8 = 26/8 = 3 1/4 (Answer: B)