87 加法 2 等于多少？
87 + 2 = 89
87加法2 等于 89
竖式演算
验算
- 用减法验算：89 − 2 = 87
- 用减法验算：89 − 87 = 2
相关题目
87 + 1 = 88
87 + 3 = 90
87 + 4 = 91
87 + 5 = 92
87 + 6 = 93
87 + 7 = 94
87 + 8 = 95
87 + 9 = 96
86 + 2 = 88
88 + 2 = 90
85 + 2 = 87
89 + 2 = 91
84 + 2 = 86
90 + 2 = 92
83 + 2 = 85
91 + 2 = 93
1 + 88 = 89
2 + 87 = 89
3 + 86 = 89
4 + 85 = 89
5 + 84 = 89
6 + 83 = 89
80 + 19 = 99
13 + 3 = 16
13 + 61 = 74
7 + 41 = 48
57 + 11 = 68
30 + 67 = 97
100 - 11 = 89
98 - 9 = 89