
您好,以下是一种可能的写法:
1. 4 + 7 - 2 = 9
2. 8 - 3 + 6 = 11
3. 5 + 9 - 4 = 10
4. 2 - 6 + 3 = -1
5. 10 + 4 - 8 = 6
6. 6 - 2 + 7 = 11
7. 3 + 5 - 1 = 7
8. 9 - 4 + 2 = 7
9. 7 + 2 - 5 = 4
10. 1 - 9 + 6 = -2
11. 12 + 3 - 6 = 9
12. 8 - 2 + 4 = 10
13. 11 + 5 - 9 = 7
14. 6 - 3 + 2 = 5
15. 9 + 4 - 7 = 6
16. 3 - 5 + 8 = 6
17. 7 + 6 - 2 = 11
18. 4 - 1 + 9 = 12
19. 10 + 2 - 6 = 6
20. 5 - 3 + 1 = 3
其中,每一道题目都包含两个加减运算,按照先算加法后算减法的原则,从左到右依次计算即可。答案均为整数。
50-8+12
35-5+8
70-45+2
55+2-13
15-6+2
80-15+23
43+16-50
12-3+6
44+25-36
68-15+23
100-25+36
99+1-55
87-46+28
88+23-25
66-23+25
39-25+8
70-46+34
88-25+7
54-23+70
63-5+8