20 减法 20 等于多少？
20 - 20 = 0
20减法20 等于 0
竖式演算
验算
- 用加法验算：0 + 20 = 20
相关题目
20 - 19 = 1
20 - 18 = 2
20 - 17 = 3
20 - 16 = 4
20 - 15 = 5
20 - 14 = 6
20 - 13 = 7
20 - 12 = 8
21 - 20 = 1
22 - 20 = 2
23 - 20 = 3
24 - 20 = 4
25 - 20 = 5
26 - 20 = 6
27 - 20 = 7
28 - 20 = 8
1 - 1 = 0
2 - 2 = 0
3 - 3 = 0
4 - 4 = 0
5 - 5 = 0
6 - 6 = 0
86 - 35 = 51
46 - 32 = 14
67 - 66 = 1
83 - 41 = 42
67 - 51 = 16
74 - 21 = 53
72 - 5 = 67
10 - 4 = 6