三年级口算题卡每天100题的脱式计算是对学生加深口算、巩固基础的一种常用方法。具体的脱式计算步骤如下：
1. 首先，将每一道题目的算式都抄写到题卡上，并留出答案的位置；
2. 接着，将题目一题一题地反复计算，并在题卡上将答案写在相应的位置上；
3. 最后，通过比对答案与标准答案来检验自己的答题情况，确保计算准确。
100道题目的脱式计算可以帮助学生熟悉各种口算题型，提高口算能力和思维反应速度，同时也是练习学生记忆、集中注意力的好方法。
回答如下：以下是一份可能的口算题卡，每天包含100道脱式计算题目，适合三年级学生练习口算能力：
1. 54 - 27 =
2. 68 + 25 =
3. 91 - 39 =
4. 72 + 18 =
5. 56 - 38 =
6. 89 + 13 =
7. 75 - 28 =
8. 63 + 26 =
9. 97 - 49 =
10. 82 + 18 =
11. 53 - 37 =
12. 71 + 29 =
13. 86 - 28 =
14. 47 + 33 =
15. 69 - 25 =
16. 84 + 16 =
17. 92 - 37 =
18. 57 + 34 =
19. 88 - 49 =
20. 63 + 37 =
21. 96 - 28 =
22. 76 + 24 =
23. 85 - 37 =
24. 59 + 41 =
25. 92 - 58 =
26. 67 + 33 =
27. 79 - 23 =
28. 52 + 48 =
29. 98 - 57 =
30. 73 + 27 =
31. 84 - 32 =
32. 64 + 36 =
33. 99 - 44 =
34. 75 + 25 =
35. 82 - 36 =
36. 56 + 44 =
37. 97 - 58 =
38. 61 + 39 =
39. 88 - 43 =
40. 77 + 23 =
41. 92 - 48 =
42. 68 + 32 =
43. 86 - 39 =
44. 57 + 43 =
45. 99 - 68 =
46. 72 + 28 =
47. 84 - 29 =
48. 53 + 47 =
49. 96 - 48 =
50. 64 + 36 =
51. 83 - 38 =
52. 81 + 19 =
53. 98 - 59 =
54. 74 + 26 =
55. 90 - 37 =
56. 59 + 41 =
57. 96 - 47 =
58. 77 + 23 =
59. 93 - 35 =
60. 65 + 35 =
61. 87 - 32 =
62. 58 + 42 =
63. 99 - 47 =
64. 76 + 24 =
65. 80 - 29 =
66. 54 + 46 =
67. 91 - 49 =
68. 69 + 31 =
69. 95 - 43 =
70. 63 + 37 =
71. 87 - 29 =
72. 56 + 44 =
73. 98 - 59 =
74. 72 + 28 =
75. 89 - 33 =
76. 59 + 41 =
77. 94 - 48 =
78. 81 + 19 =
79. 96 - 45 =
80. 67 + 33 =
81. 85 - 29 =
82. 56 + 44 =
83. 98 - 59 =
84. 68 + 32 =
85. 90 - 38 =
86. 57 + 43 =
87. 99 - 47 =
88. 77 + 23 =
89. 94 - 42 =
90. 61 + 39 =
91. 87 - 29 =
92. 52 + 48 =
93. 98 - 55 =
94. 74 + 26 =
95. 83 - 37 =
96. 65 + 35 =
97. 92 - 43 =
98. 68 + 32 =
99. 95 - 46 =
100. 79 + 21 =
