【四则运算练习题100道】在数学学习过程中，四则运算是基础中的基础，掌握好加、减、乘、除的运算规则，对于提升计算能力、逻辑思维以及后续数学知识的学习都有着重要的作用。为了帮助学生更好地巩固这一知识点，下面整理了100道四则运算练习题，涵盖整数与小数，适合小学高年级及初中低年级学生使用。

一、加法练习（共20题）

1. 123 + 456 =

2. 789 + 123 =

3. 567 + 890 =

4. 345 + 678 =

5. 234 + 567 =

6. 111 + 222 =

7. 300 + 400 =

8. 999 + 1 =

9. 78 + 22 =

10. 100 + 900 =

11. 12.3 + 4.5 =

12. 6.7 + 8.9 =

13. 15.2 + 3.8 =

14. 20.5 + 10.5 =

15. 3.14 + 2.86 =

16. 0.9 + 0.1 =

17. 1.2 + 3.4 =

18. 5.6 + 7.8 =

19. 12.1 + 3.9 =

20. 100.5 + 20.5 =

二、减法练习（共20题）

21. 567 - 234 =

22. 890 - 123 =

23. 789 - 456 =

24. 654 - 321 =

25. 987 - 654 =

26. 1000 - 500 =

27. 500 - 250 =

28. 700 - 300 =

29. 100 - 50 =

30. 200 - 100 =

31. 12.5 - 3.2 =

32. 8.7 - 2.3 =

33. 10.5 - 5.5 =

34. 15.8 - 4.2 =

35. 20.3 - 10.1 =

36. 5.9 - 1.9 =

37. 3.6 - 1.2 =

38. 10.1 - 5.1 =

39. 15.5 - 5.5 =

40. 25.0 - 12.5 =

三、乘法练习（共20题）

41. 12 × 3 =

42. 25 × 4 =

43. 10 × 10 =

44. 8 × 7 =

45. 9 × 6 =

46. 15 × 5 =

47. 20 × 3 =

48. 11 × 11 =

49. 13 × 4 =

50. 18 × 2 =

51. 2.5 × 4 =

52. 1.5 × 2 =

53. 3.2 × 5 =

54. 4.5 × 2 =

55. 6.7 × 3 =

56. 2.1 × 5 =

57. 0.5 × 10 =

58. 1.2 × 6 =

59. 2.4 × 3 =

60. 3.5 × 4 =

四、除法练习（共20题）

61. 24 ÷ 6 =

62. 30 ÷ 5 =

63. 40 ÷ 8 =

64. 50 ÷ 10 =

65. 60 ÷ 12 =

66. 72 ÷ 9 =

67. 81 ÷ 9 =

68. 100 ÷ 25 =

69. 45 ÷ 5 =

70. 36 ÷ 6 =

71. 10 ÷ 2 =

72. 15 ÷ 3 =

73. 20 ÷ 4 =

74. 25 ÷ 5 =

75. 10.5 ÷ 5 =

76. 12.8 ÷ 4 =

77. 18 ÷ 3 =

78. 24 ÷ 6 =

79. 30 ÷ 5 =

80. 40 ÷ 8 =

五、综合运算练习（共20题）

81. 12 + 3 × 4 =

82. 10 ÷ 2 + 5 =

83. (15 - 5) × 2 =

84. 6 + 8 ÷ 2 =

85. 10 × (3 + 2) =

86. 20 - 5 × 2 =

87. 15 ÷ 3 + 5 =

88. (8 + 2) × 3 =

89. 10 + 10 ÷ 5 =

90. 4 × (5 - 2) =

91. 12.5 + 3.5 × 2 =

92. 10.5 ÷ 5 + 2 =

93. 6.4 × 2 - 5 =

94. 8.7 - 2.3 × 2 =

95. 15 ÷ 3 + 4.5 =

96. 10.2 + 5.8 ÷ 2 =

97. 2.5 × 4 - 6 =

98. 12.3 - 3.2 × 2 =

99. 10.5 ÷ 5 + 3.5 =

100. 8 × 3 - 12 =

通过这些练习题，学生可以逐步提升自己的计算速度和准确率，同时培养良好的数学思维习惯。建议每天完成10-20题，并结合错题进行反思与总结，以达到最佳的学习效果。