20 减法 18 等于多少？
20 - 18 = 2
20减法18 等于 2
竖式演算
验算
- 用加法验算：2 + 18 = 20
相关题目
20 - 17 = 3
20 - 19 = 1
20 - 16 = 4
20 - 20 = 0
20 - 15 = 5
20 - 14 = 6
20 - 13 = 7
20 - 12 = 8
19 - 18 = 1
21 - 18 = 3
18 - 18 = 0
22 - 18 = 4
23 - 18 = 5
24 - 18 = 6
25 - 18 = 7
26 - 18 = 8
3 - 1 = 2
4 - 2 = 2
5 - 3 = 2
6 - 4 = 2
7 - 5 = 2
8 - 6 = 2
90 - 67 = 23
65 - 59 = 6
87 - 49 = 38
52 - 43 = 9
41 - 23 = 18
85 - 59 = 26
1 × 2 = 2
1 + 1 = 2