9 加法 78 等于多少？
9 + 78 = 87
9加法78 等于 87
竖式演算
验算
- 用减法验算：87 − 78 = 9
- 用减法验算：87 − 9 = 78
相关题目
9 + 77 = 86
9 + 79 = 88
9 + 76 = 85
9 + 80 = 89
9 + 75 = 84
9 + 81 = 90
9 + 74 = 83
9 + 82 = 91
8 + 78 = 86
10 + 78 = 88
11 + 78 = 89
7 + 78 = 85
12 + 78 = 90
6 + 78 = 84
13 + 78 = 91
5 + 78 = 83
1 + 86 = 87
2 + 85 = 87
3 + 84 = 87
4 + 83 = 87
5 + 82 = 87
6 + 81 = 87
52 + 38 = 90
62 + 85 = 147
98 + 71 = 169
31 + 92 = 123
67 + 24 = 91
7 + 37 = 44
94 - 7 = 87
29 × 3 = 87