为了帮助学生更好地掌握小数的乘除运算技巧，提高计算速度与准确性，以下精心准备了50道小数乘除口算题目。这些题目涵盖了不同难度层次，适合小学中高年级的学生进行练习。

一、小数乘法练习

1. 0.3 × 4 =

2. 0.7 × 6 =

3. 1.2 × 5 =

4. 0.8 × 9 =

5. 2.5 × 4 =

6. 0.4 × 7 =

7. 1.5 × 3 =

8. 0.9 × 8 =

9. 3.2 × 2 =

10. 0.6 × 5 =

11. 0.1 × 10 =

12. 0.5 × 8 =

13. 2.1 × 3 =

14. 0.7 × 7 =

15. 1.8 × 4 =

16. 0.3 × 9 =

17. 1.4 × 6 =

18. 0.8 × 10 =

19. 2.7 × 2 =

20. 0.5 × 6 =

二、小数除法练习

21. 3 ÷ 0.5 =

22. 8 ÷ 0.2 =

23. 12 ÷ 0.4 =

24. 15 ÷ 0.5 =

25. 20 ÷ 0.1 =

26. 10 ÷ 0.2 =

27. 6 ÷ 0.3 =

28. 9 ÷ 0.3 =

29. 18 ÷ 0.6 =

30. 25 ÷ 0.5 =

31. 4 ÷ 0.1 =

32. 7 ÷ 0.7 =

33. 14 ÷ 0.2 =

34. 21 ÷ 0.3 =

35. 30 ÷ 0.5 =

36. 5 ÷ 0.5 =

37. 16 ÷ 0.4 =

38. 24 ÷ 0.6 =

39. 35 ÷ 0.7 =

40. 40 ÷ 0.8 =

三、混合运算练习

41. 0.5 × 6 ÷ 0.2 =

42. 1.2 × 4 ÷ 0.8 =

43. 2.5 × 2 ÷ 0.5 =

44. 0.8 × 9 ÷ 0.3 =

45. 1.5 × 3 ÷ 0.5 =

46. 0.4 × 7 ÷ 0.2 =

47. 2.1 × 4 ÷ 0.7 =

48. 0.9 × 10 ÷ 0.3 =

49. 3.2 × 3 ÷ 0.6 =

50. 0.6 × 8 ÷ 0.4 =

通过反复练习以上题目，学生们可以逐步熟悉小数的乘除运算规律，增强对数字的敏感度和计算能力。希望每位同学都能在实践中找到乐趣，并取得优异的成绩！