2 加法 87 等于多少？
2 + 87 = 89
2加法87 等于 89
竖式演算
验算
- 用减法验算：89 − 87 = 2
- 用减法验算：89 − 2 = 87
相关题目
2 + 86 = 88
2 + 88 = 90
2 + 85 = 87
2 + 89 = 91
2 + 84 = 86
2 + 90 = 92
2 + 83 = 85
2 + 91 = 93
1 + 87 = 88
3 + 87 = 90
4 + 87 = 91
5 + 87 = 92
6 + 87 = 93
7 + 87 = 94
8 + 87 = 95
9 + 87 = 96
1 + 88 = 89
3 + 86 = 89
4 + 85 = 89
5 + 84 = 89
6 + 83 = 89
7 + 82 = 89
44 + 14 = 58
13 + 60 = 73
63 + 24 = 87
2 + 66 = 68
7 + 81 = 88
64 + 32 = 96
95 - 6 = 89
94 - 5 = 89