【小学数学三年级下册100道口算题】在小学数学的学习过程中，口算能力是学生必须掌握的基本技能之一。它不仅有助于提高学生的计算速度和准确率，还能增强他们的数学思维能力和自信心。为了帮助三年级的学生更好地巩固所学知识，下面整理了100道适合三年级下册的口算题，涵盖加减乘除等基础运算，内容贴近教材，难度适中，适合日常练习。
一、加法口算题（20题）
1. 23 + 15 =
2. 47 + 12 =
3. 68 + 21 =
4. 39 + 11 =
5. 54 + 26 =
6. 72 + 18 =
7. 85 + 15 =
8. 19 + 31 =
9. 43 + 37 =
10. 60 + 25 =
11. 17 + 23 =
12. 56 + 14 =
13. 35 + 45 =
14. 28 + 32 =
15. 41 + 19 =
16. 73 + 17 =
17. 50 + 20 =
18. 12 + 28 =
19. 34 + 26 =
20. 67 + 13 =
二、减法口算题（20题）
21. 58 - 24 =
22. 75 - 32 =
23. 90 - 45 =
24. 63 - 17 =
25. 82 - 36 =
26. 49 - 19 =
27. 71 - 28 =
28. 55 - 25 =
29. 64 - 31 =
30. 88 - 43 =
31. 37 - 12 =
32. 93 - 56 =
33. 76 - 34 =
34. 45 - 18 =
35. 62 - 27 =
36. 89 - 41 =
37. 53 - 29 =
38. 77 - 33 =
39. 44 - 15 =
40. 91 - 58 =
三、乘法口算题（30题）
41. 3 × 4 =
42. 5 × 6 =
43. 7 × 8 =
44. 2 × 9 =
45. 6 × 7 =
46. 4 × 5 =
47. 8 × 3 =
48. 9 × 2 =
49. 5 × 5 =
50. 7 × 4 =
51. 3 × 7 =
52. 6 × 8 =
53. 2 × 6 =
54. 9 × 3 =
55. 4 × 8 =
56. 5 × 9 =
57. 7 × 6 =
58. 8 × 5 =
59. 3 × 9 =
60. 6 × 4 =
61. 2 × 7 =
62. 4 × 7 =
63. 9 × 4 =
64. 5 × 8 =
65. 8 × 2 =
66. 7 × 5 =
67. 6 × 6 =
68. 3 × 6 =
69. 9 × 5 =
70. 4 × 6 =
四、除法口算题（20题）
71. 12 ÷ 3 =
72. 18 ÷ 6 =
73. 24 ÷ 4 =
74. 30 ÷ 5 =
75. 16 ÷ 2 =
76. 20 ÷ 4 =
77. 25 ÷ 5 =
78. 15 ÷ 3 =
79. 28 ÷ 7 =
80. 36 ÷ 6 =
81. 10 ÷ 2 =
82. 14 ÷ 7 =
83. 21 ÷ 3 =
84. 32 ÷ 8 =
85. 18 ÷ 2 =
86. 27 ÷ 9 =
87. 40 ÷ 5 =
88. 24 ÷ 6 =
89. 12 ÷ 4 =
90. 35 ÷ 5 =
五、综合口算题（10题）
91. 25 + 15 - 10 =
92. 40 - 12 + 8 =
93. 3 × 5 + 10 =
94. 18 ÷ 2 + 7 =
95. 6 × 4 - 12 =
96. 30 ÷ 5 + 6 =
97. 22 + 18 - 15 =
98. 9 × 2 + 5 =
99. 45 - 20 + 5 =
100. 16 ÷ 4 × 3 =
通过每天坚持练习这些题目，可以帮助孩子提升计算能力，打下坚实的数学基础。家长也可以根据孩子的学习情况，适当调整题目的难度和数量，让孩子在轻松愉快的氛围中掌握数学知识。
