87 减法 81 等于多少？
87 - 81 = 6
87减法81 等于 6
竖式演算
验算
- 用加法验算：6 + 81 = 87
相关题目
87 - 80 = 7
87 - 82 = 5
87 - 83 = 4
87 - 79 = 8
87 - 84 = 3
87 - 78 = 9
87 - 85 = 2
87 - 77 = 10
86 - 81 = 5
88 - 81 = 7
85 - 81 = 4
89 - 81 = 8
84 - 81 = 3
90 - 81 = 9
91 - 81 = 10
83 - 81 = 2
7 - 1 = 6
8 - 2 = 6
9 - 3 = 6
10 - 4 = 6
11 - 5 = 6
12 - 6 = 6
94 - 52 = 42
83 - 71 = 12
5 - 4 = 1
19 - 4 = 15
55 - 22 = 33
87 - 5 = 82
2 + 4 = 6
1 + 5 = 6