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
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2 + 87 = 89
3 + 86 = 89
4 + 85 = 89
5 + 84 = 89
6 + 83 = 89
41 + 42 = 83
20 + 2 = 22
13 + 71 = 84
11 + 45 = 56
44 + 1 = 45
60 + 35 = 95
90 - 1 = 89
99 - 10 = 89