2 加法 84 等于多少？
2 + 84 = 86
2加法84 等于 86
竖式演算
验算
- 用减法验算：86 − 84 = 2
- 用减法验算：86 − 2 = 84
相关题目
2 + 83 = 85
2 + 85 = 87
2 + 82 = 84
2 + 86 = 88
2 + 87 = 89
2 + 81 = 83
2 + 88 = 90
2 + 80 = 82
1 + 84 = 85
3 + 84 = 87
4 + 84 = 88
5 + 84 = 89
6 + 84 = 90
7 + 84 = 91
8 + 84 = 92
9 + 84 = 93
1 + 85 = 86
3 + 83 = 86
4 + 82 = 86
5 + 81 = 86
6 + 80 = 86
7 + 79 = 86
1 + 78 = 79
42 + 30 = 72
27 + 11 = 38
14 + 60 = 74
11 + 21 = 32
20 + 10 = 30
90 - 4 = 86
91 - 5 = 86