Exam 2 Practice Solutions

1. 3/5
2. 10/9 > 12/11
3. Sample answer: -9/20
4. Answers may vary. Samples: 6/20, 9/30, 12/40
5. 13/15
6. 51 1/3 pounds
7. 49/60
8. 1/4 inch
9. 5/24
10. 5/4
11. 7 13/21 ft.
12. 1/5
13. 6 times
14. 5x10¹ + 4 + 8x10^-1 + 8x10^-2
15. 1.1x10^-4
16. 2.53x10⁵
17. 0.0086
18. 65,536
19. 13/25
20. 0.5
21. 41/90
22. 0.27 (repetend shown in bold).
23. 61/99
24. 23 (Answers may vary>
25. 2/7, and 0.11331133... are rational; sqrt(19) is irrational
26. 3.87 > sqrt(15)
27. 9 and 10
28. 7
29. 10
30. 10
31. Tuesday
32. 5
33. Start at 5 and count how many times you can go counterclockwise by twos until you reach 0. After 6 moves, you reach 0. Therefore 5/2 = 6 on the 7 hour clock.
34. 6/35
35. 29/24
36. 1/2