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
1 + 98 = 99
15 + 10 = 25
87 + 100 = 187
53 + 43 = 96
34 + 100 = 134
56 + 10 = 66
95 - 6 = 89
98 - 9 = 89