在小学阶段，数学是孩子们学习的重要科目之一，而口算能力则是数学学习的基础。为了帮助一年级学生打好基础，提升计算速度和准确性，下面整理了一份适合一年级学生的100道口算练习题，涵盖加法、减法等基本运算，内容简单易懂，适合日常练习。
一、20以内加法（共50题）
1. 3 + 4 =
2. 5 + 2 =
3. 7 + 1 =
4. 6 + 3 =
5. 8 + 2 =
6. 9 + 1 =
7. 2 + 5 =
8. 4 + 5 =
9. 1 + 6 =
10. 3 + 6 =
11. 4 + 4 =
12. 5 + 5 =
13. 2 + 7 =
14. 6 + 4 =
15. 1 + 8 =
16. 3 + 7 =
17. 5 + 3 =
18. 2 + 6 =
19. 4 + 3 =
20. 7 + 2 =
21. 8 + 1 =
22. 9 + 0 =
23. 1 + 9 =
24. 5 + 4 =
25. 6 + 2 =
26. 7 + 3 =
27. 8 + 0 =
28. 3 + 5 =
29. 4 + 6 =
30. 2 + 8 =
31. 9 + 1 =
32. 1 + 7 =
33. 6 + 3 =
34. 5 + 2 =
35. 7 + 2 =
36. 4 + 5 =
37. 3 + 4 =
38. 2 + 7 =
39. 6 + 1 =
40. 8 + 2 =
41. 9 + 0 =
42. 5 + 5 =
43. 7 + 3 =
44. 4 + 6 =
45. 2 + 8 =
46. 1 + 9 =
47. 6 + 4 =
48. 3 + 7 =
49. 5 + 4 =
50. 2 + 9 =
二、20以内减法（共50题）
51. 9 - 3 =
52. 7 - 2 =
53. 8 - 5 =
54. 6 - 3 =
55. 5 - 2 =
56. 10 - 4 =
57. 7 - 4 =
58. 9 - 5 =
59. 8 - 6 =
60. 6 - 2 =
61. 10 - 5 =
62. 9 - 7 =
63. 7 - 3 =
64. 8 - 4 =
65. 6 - 1 =
66. 5 - 3 =
67. 10 - 6 =
68. 9 - 6 =
69. 8 - 3 =
70. 7 - 5 =
71. 6 - 4 =
72. 5 - 1 =
73. 10 - 7 =
74. 9 - 4 =
75. 8 - 2 =
76. 7 - 2 =
77. 6 - 5 =
78. 5 - 4 =
79. 10 - 8 =
80. 9 - 2 =
81. 8 - 1 =
82. 7 - 1 =
83. 6 - 3 =
84. 5 - 2 =
85. 10 - 9 =
86. 9 - 3 =
87. 8 - 5 =
88. 7 - 4 =
89. 6 - 2 =
90. 5 - 1 =
91. 10 - 3 =
92. 9 - 1 =
93. 8 - 7 =
94. 7 - 6 =
95. 6 - 4 =
96. 5 - 3 =
97. 10 - 2 =
98. 9 - 8 =
99. 8 - 6 =
100. 7 - 3 =
这份练习题可以帮助一年级学生巩固基础知识，提高心算能力。家长可以在家中为孩子定期进行练习，老师也可以作为课堂作业使用。坚持每天练习，孩子的数学能力将会有明显提升。
