1. 25 + 7 =
2. 14 – 6 =
3. 32 – 20 =
4. 15 + 15 =
5. 9 + 25 =
6. 30 – 12 =
7. 28 – 18 =
8. 17 + 13 =
9. 24 – 8 =
10. 10 + 20 =
11. 12 + 16 =
12. 29 – 9 =
13. 13 + 14 =
14. 22 – 10 =
15. 11 + 17 =
16. 33 – 13 =
17. 19 – 9 =
18. 26 – 16 =
19. 31 – 21 =
20. 16 + 14 =
21. 6 + 34 =
22. 27 – 17 =
23. 23 + 11 =
24. 36 – 26 =
25. 21 + 9 =
26. 35 – 5 =
27. 40 – 30 =
28. 9 + 31 =
29. 39 – 39 =
30. 20 + 20 =
31. 38 – 8 =
32. 13 + 10 =
33. 34 – 24 =
34. 37 – 7 =
35. 4 + 36 =
36. 33 – 33 =
37. 7 + 33 =
38. 40 – 40 =
39. 24 + 6 =
40. 8 + 32 =
以上是一些40以内的加减法练习题,通过系统练习这些题目,您可以有效地提高加减运算能力,夯实基础。在练习过程中,请注意掌握加减法的运算法则,理解进位和借位的概念,并且注重练习速度和准确性的平衡。祝您学习愉快,取得好成绩!