以下是一些三年级学生可能会遇到的100道除法算式，用分数表示：

1. 6 ÷ 2 = 3/1

2. 12 ÷ 4 = 3/1

3. 18 ÷ 6 = 3/1

4. 24 ÷ 8 = 3/1

5. 30 ÷ 10 = 3/1

6. 36 ÷ 12 = 3/1

7. 42 ÷ 14 = 3/1

8. 48 ÷ 16 = 3/1

9. 54 ÷ 18 = 3/1

10. 60 ÷ 20 = 3/1

11. 72 ÷ 24 = 3/1

12. 84 ÷ 28 = 3/1

13. 96 ÷ 32 = 3/1

14. 8 ÷ 2 = 4/1

15. 16 ÷ 4 = 4/1

16. 24 ÷ 6 = 4/1

17. 32 ÷ 8 = 4/1

18. 40 ÷ 10 = 4/1

19. 48 ÷ 12 = 4/1

20. 56 ÷ 14 = 4/1

21. 64 ÷ 16 = 4/1

22. 72 ÷ 18 = 4/1

23. 80 ÷ 20 = 4/1

24. 88 ÷ 22 = 4/1

25. 96 ÷ 24 = 4/1

26. 9 ÷ 3 = 3/1

27. 18 ÷ 6 = 3/1

28. 27 ÷ 9 = 3/1

29. 36 ÷ 12 = 3/1

30. 45 ÷ 15 = 3/1

31. 54 ÷ 18 = 3/1

32. 63 ÷ 21 = 3/1

33. 72 ÷ 24 = 3/1

34. 81 ÷ 27 = 3/1

35. 90 ÷ 30 = 3/1

36. 10 ÷ 2 = 5/1

37. 20 ÷ 4 = 5/1

38. 30 ÷ 6 = 5/1

39. 40 ÷ 8 = 5/1

40. 50 ÷ 10 = 5/1

41. 60 ÷ 12 = 5/1

42. 70 ÷ 14 = 5/1

43. 80 ÷ 16 = 5/1

44. 90 ÷ 18 = 5/1

45. 100 ÷ 20 = 5/1

46. 11 ÷ 1 = 11/1

47. 22 ÷ 2 = 11/1

48. 33 ÷ 3 = 11/1

49. 44 ÷ 4 = 11/1

50. 55 ÷ 5 = 11/1

51. 66 ÷ 6 = 11/1

52. 77 ÷ 7 = 11/1

53. 88 ÷ 8 = 11/1

54. 99 ÷ 9 = 11/1

55. 12 ÷ 3 = 4/1

56. 24 ÷ 6 = 4/1

57. 36 ÷ 9 = 4/1

58. 48 ÷ 12 = 4/1

59. 60 ÷ 15 = 4/1

60. 72 ÷ 18 = 4/1

61. 84 ÷ 21 = 4/1

62. 96 ÷ 24 = 4/1

63. 7 ÷ 1 = 7/1

64. 14 ÷ 2 = 7/1

65. 21 ÷ 3 = 7/1

66. 28 ÷ 4 = 7/1

67. 35 ÷ 5 = 7/1

68. 42 ÷ 6 = 7/1

69. 49 ÷ 7 = 7/1

70. 56 ÷ 8 = 7/1

71. 63 ÷ 9 = 7/1

72. 8 ÷ 2 = 4/1

73. 16 ÷ 4 = 4/1

74. 24 ÷ 6 = 4/1

75. 32 ÷ 8 = 4/1

76. 40 ÷ 10 = 4/1

77. 48 ÷ 12 = 4/1

78. 56 ÷ 14 = 4/1

79. 64 ÷ 16 = 4/1

80. 72 ÷ 18 = 4/1

81. 9 ÷ 3 = 3/1

82. 18 ÷ 6 = 3/1

83. 27 ÷ 9 = 3/1

84. 36 ÷ 12 = 3/1

85. 45 ÷ 15 = 3/1

86. 54 ÷ 18 = 3/1

87. 63 ÷ 21 = 3/1

88. 72 ÷ 24 = 3/1

89. 90 ÷ 30 = 3/1

90. 10 ÷ 2 = 5/1

91. 20 ÷ 4 = 5/1

92. 30 ÷ 6 = 5/1

93. 40 ÷ 8 = 5/1

94. 50 ÷ 10 = 5/1

95. 60 ÷ 12 = 5/1

96. 70 ÷ 14 = 5/1

97. 80 ÷ 16 = 5/1

98. 90 ÷ 18 = 5/1

99. 100 ÷ 20 = 5/1

100. 5 ÷ 1 = 5/1

请注意，这些算式是随机选择的，并且每个算式都对应一个分数形式。在三年级，学生通常开始学习简单的除法，这些算式反映了这一阶段的难度。