87 加法 4 等于多少？
87 + 4 = 91
87加法4 等于 91
竖式演算
验算
- 用减法验算：91 − 4 = 87
- 用减法验算：91 − 87 = 4
相关题目
87 + 3 = 90
87 + 5 = 92
87 + 2 = 89
87 + 6 = 93
87 + 1 = 88
87 + 7 = 94
87 + 8 = 95
87 + 9 = 96
86 + 4 = 90
88 + 4 = 92
85 + 4 = 89
89 + 4 = 93
84 + 4 = 88
90 + 4 = 94
83 + 4 = 87
91 + 4 = 95
1 + 90 = 91
2 + 89 = 91
3 + 88 = 91
4 + 87 = 91
5 + 86 = 91
6 + 85 = 91
29 + 23 = 52
32 + 80 = 112
61 + 70 = 131
74 + 42 = 116
17 + 78 = 95
8 + 85 = 93
1 × 91 = 91
99 - 8 = 91