3 加法 87 等于多少？
3 + 87 = 90
3加法87 等于 90
竖式演算
验算
- 用减法验算：90 − 87 = 3
- 用减法验算：90 − 3 = 87
相关题目
3 + 86 = 89
3 + 88 = 91
3 + 85 = 88
3 + 89 = 92
3 + 84 = 87
3 + 90 = 93
3 + 83 = 86
3 + 91 = 94
2 + 87 = 89
4 + 87 = 91
1 + 87 = 88
5 + 87 = 92
6 + 87 = 93
7 + 87 = 94
8 + 87 = 95
9 + 87 = 96
1 + 89 = 90
2 + 88 = 90
4 + 86 = 90
5 + 85 = 90
6 + 84 = 90
7 + 83 = 90
91 + 35 = 126
54 + 80 = 134
94 + 74 = 168
72 + 66 = 138
59 + 32 = 91
29 + 57 = 86
3 × 30 = 90
2 × 45 = 90