1. 25 + 37 = ____
2. 48 – 19 = ____
3. 63 ÷ 9 = ____
4. 72 ÷ 8 = ____
5. 56 + 27 = ____
6. 84 – 35 = ____
7. 90 ÷ 6 = ____
8. 45 + 36 = ____
9. 81 – 48 = ____
10. 64 ÷ 8 = ____
11. 53 + 29 = ____
12. 75 – 36 = ____
13. 90 ÷ 5 = ____
14. 42 + 37 = ____
15. 84 – 45 = ____
16. 60 ÷ 6 = ____
17. 54 + 27 = ____
18. 72 – 35 = ____
19. 90 ÷ 9 = ____
20. 45 + 36 = ____
21. 81 – 48 = ____
22. 64 ÷ 8 = ____
23. 53 + 29 = ____
24. 75 – 36 = ____
25. 90 ÷ 5 = ____
26. 42 + 37 = ____
27. 84 – 45 = ____
28. 60 ÷ 6 = ____
29. 54 + 27 = ____
30. 72 – 35 = ____
31. 90 ÷ 9 = ____
32. 45 + 36 = ____
33. 81 – 48 = ____
34. 64 ÷ 8 = ____
35. 53 + 29 = ____
36. 75 – 36 = ____
37. 90 ÷ 5 = ____
38. 42 + 37 = ____
39. 84 – 45 = ____
40. 60 ÷ 6 = ____
41. 54 + 27 = ____
42. 72 – 35 = ____
43. 90 ÷ 9 = ____
44. 45 + 36 = ____
45. 81 – 48 = ____
46. 64 ÷ 8 = ____
47. 53 + 29 = ____
48. 75 – 36 = ____
49. 90 ÷ 5 = ____
50. 42 + 37 = ____
51. 84 – 45 = ____
52. 60 ÷ 6 = ____
53. 54 + 27 = ____
54. 72 – 35 = ____
55. 90 ÷ 9 = ____
56. 45 + 36 = ____
57. 81 – 48 = ____
58. 64 ÷ 8 = ____
59. 53 + 29 = ____
60. 75 – 36 = ____
61. 90 ÷ 5 = ____
62. 42 + 37 = ____
63. 84 – 45 = ____
64. 60 ÷ 6 = ____
65. 54 + 27 = ____
66. 72 – 35 = ____
67. 90 ÷ 9 = ____
68. 45 + 36 = ____
69. 81 – 48 = ____
70. 64 ÷ 8 = ____
71. 53 + 29 = ____
72. 75 – 36 = ____
73. 90 ÷ 5 = ____
74. 42 + 37 = ____
75. 84 – 45 = ____
76. 60 ÷ 6 = ____
77. 54 + 27 = ____
78. 72 – 35 = ____
79. 90 ÷ 9 = ____
80. 45 + 36 = ____
81. 81 – 48 = ____
82. 64 ÷ 8 = ____
83. 53 + 29 = ____
84. 75 – 36 = ____
85. 90 ÷ 5 = ____
86. 42 + 37 = ____
87. 84 – 45 = ____
88. 60 ÷ 6 = ____
89. 54 + 27 = ____
90. 72 – 35 = ____
91. 90 ÷ 9 = ____
92. 45 + 36 = ____
93. 81 – 48 = ____
94. 64 ÷ 8 = ____
95. 53 + 29 = ____
96. 75 – 36 = ____
97. 90 ÷ 5 = ____
98. 42 + 37 = ____
99. 84 – 45 = ____
100. 60 ÷ 6 = ____
这些题目涵盖了加法、减法、乘法和除法的基本运算，以及简单的混合运算。通过这些练习，你可以巩固四年级数学的基础概念，并提升你的计算能力。