一、基础练习
1. 5 + 3 = _______
2. 12 – 7 = _______
3. 18 – 9 = _______
4. 14 + 4 = _______
5. 2 + 26 = _______
6. 20 – 5 = _______
7. 29 – 20 = _______
8. 8 + 16 = _______
9. 11 + 15 = _______
10. 27 – 19 = _______
二、进阶练习
1. 13 + 13 – 10 = _______
2. 22 – 8 + 4 = _______
3. 17 – (9 – 5) = _______
4. 6 + 6 + 6 = _______
5. 24 – (14 + 6) = _______
6. 10 + (10 – 10) = _______
7. 28 – (18 – 8) = _______
8. 15 + (5 – 5) = _______
9. 21 – (11 – 1) = _______
10. 16 + (4 – 4) = _______
三、混合练习
1. 5 + 9 = _______
2. 16 – 6 = _______
3. 12 + 4 = _______
4. 20 – 10 = _______
5. 7 + 12 = _______
6. 25 – 5 = _______
7. 19 – 9 = _______
8. 8 + 12 = _______
9. 14 + 6 = _______
10. 28 – 8 = _______
四、拓展练习
1. 23 + 23 – 20 = _______
2. 18 – 9 + 9 = _______
3. 11 + 11 – 11 = _______
4. 6 + 6 + 8 = _______
5. 24 – (12 + 4) = _______
6. 10 + (6 – 2) = _______
7. 28 – (18 – 10) = _______
8. 15 + (5 – 3) = _______
9. 21 – (11 – 5) = _______
10. 16 + (4 – 2) = _______
这些练习题覆盖了基础、进阶、混合和拓展四个层次，旨在帮助学生巩固30以内的加减法，并提升他们的数算能力。通过反复练习，学生可以更熟练地进行加减法的计算，为更高年级的数学学习打下坚实基础。