12 加法 78 等于多少？
12 + 78 = 90
12加法78 等于 90
竖式演算
验算
- 用减法验算：90 − 78 = 12
- 用减法验算：90 − 12 = 78
相关题目
12 + 77 = 89
12 + 79 = 91
12 + 76 = 88
12 + 80 = 92
12 + 75 = 87
12 + 81 = 93
12 + 74 = 86
12 + 82 = 94
11 + 78 = 89
13 + 78 = 91
10 + 78 = 88
14 + 78 = 92
15 + 78 = 93
9 + 78 = 87
16 + 78 = 94
8 + 78 = 86
1 + 89 = 90
2 + 88 = 90
3 + 87 = 90
4 + 86 = 90
5 + 85 = 90
6 + 84 = 90
7 + 86 = 93
67 + 90 = 157
15 + 55 = 70
50 + 50 = 100
70 + 92 = 162
31 + 70 = 101
2 × 45 = 90
10 × 9 = 90