20 减法 19 等于多少？
20 - 19 = 1
20减法19 等于 1
竖式演算
验算
- 用加法验算：1 + 19 = 20
相关题目
20 - 18 = 2
20 - 20 = 0
20 - 17 = 3
20 - 16 = 4
20 - 15 = 5
20 - 14 = 6
20 - 13 = 7
20 - 12 = 8
19 - 19 = 0
21 - 19 = 2
22 - 19 = 3
23 - 19 = 4
24 - 19 = 5
25 - 19 = 6
26 - 19 = 7
27 - 19 = 8
2 - 1 = 1
3 - 2 = 1
4 - 3 = 1
5 - 4 = 1
6 - 5 = 1
7 - 6 = 1
61 - 13 = 48
91 - 73 = 18
97 - 19 = 78
74 - 28 = 46
14 - 9 = 5
33 - 9 = 24
1 × 1 = 1
100 - 69 = 31