7 加法 77 等于多少？
7 + 77 = 84
7加法77 等于 84
竖式演算
验算
- 用减法验算：84 − 77 = 7
- 用减法验算：84 − 7 = 77
相关题目
7 + 76 = 83
7 + 78 = 85
7 + 75 = 82
7 + 79 = 86
7 + 74 = 81
7 + 80 = 87
7 + 73 = 80
7 + 81 = 88
6 + 77 = 83
8 + 77 = 85
5 + 77 = 82
9 + 77 = 86
4 + 77 = 81
10 + 77 = 87
11 + 77 = 88
3 + 77 = 80
1 + 83 = 84
2 + 82 = 84
3 + 81 = 84
4 + 80 = 84
5 + 79 = 84
6 + 78 = 84
23 + 91 = 114
15 + 48 = 63
56 + 52 = 108
34 + 9 = 43
94 + 43 = 137
50 + 82 = 132
92 - 8 = 84
98 - 14 = 84