3 加法 78 等于多少？
3 + 78 = 81
3加法78 等于 81
竖式演算
验算
- 用减法验算：81 − 78 = 3
- 用减法验算：81 − 3 = 78
相关题目
3 + 77 = 80
3 + 79 = 82
3 + 76 = 79
3 + 80 = 83
3 + 75 = 78
3 + 81 = 84
3 + 74 = 77
3 + 82 = 85
2 + 78 = 80
4 + 78 = 82
1 + 78 = 79
5 + 78 = 83
6 + 78 = 84
7 + 78 = 85
8 + 78 = 86
9 + 78 = 87
1 + 80 = 81
2 + 79 = 81
4 + 77 = 81
5 + 76 = 81
6 + 75 = 81
7 + 74 = 81
51 + 67 = 118
15 + 49 = 64
42 + 63 = 105
91 + 33 = 124
93 + 72 = 165
48 + 3 = 51
98 - 17 = 81
92 - 11 = 81