84 加法 1 等于多少？
84 + 1 = 85
84加法1 等于 85
竖式演算
验算
- 用减法验算：85 − 1 = 84
- 用减法验算：85 − 84 = 1
相关题目
84 + 2 = 86
84 + 3 = 87
84 + 4 = 88
84 + 5 = 89
84 + 6 = 90
84 + 7 = 91
84 + 8 = 92
84 + 9 = 93
83 + 1 = 84
85 + 1 = 86
82 + 1 = 83
86 + 1 = 87
87 + 1 = 88
81 + 1 = 82
88 + 1 = 89
80 + 1 = 81
1 + 84 = 85
2 + 83 = 85
3 + 82 = 85
4 + 81 = 85
5 + 80 = 85
6 + 79 = 85
71 + 27 = 98
17 + 50 = 67
20 + 76 = 96
66 + 100 = 166
3 + 12 = 15
20 + 39 = 59
90 - 5 = 85
91 - 6 = 85