7 加法 80 等于多少？
7 + 80 = 87
7加法80 等于 87
竖式演算
验算
- 用减法验算：87 − 80 = 7
- 用减法验算：87 − 7 = 80
相关题目
7 + 79 = 86
7 + 81 = 88
7 + 78 = 85
7 + 82 = 89
7 + 83 = 90
7 + 77 = 84
7 + 84 = 91
7 + 76 = 83
6 + 80 = 86
8 + 80 = 88
5 + 80 = 85
9 + 80 = 89
4 + 80 = 84
10 + 80 = 90
11 + 80 = 91
3 + 80 = 83
1 + 86 = 87
2 + 85 = 87
3 + 84 = 87
4 + 83 = 87
5 + 82 = 87
6 + 81 = 87
63 + 31 = 94
36 + 21 = 57
53 + 35 = 88
2 + 51 = 53
100 + 37 = 137
62 + 21 = 83
93 - 6 = 87
1 × 87 = 87