20 减法 11 等于多少？
20 - 11 = 9
20减法11 等于 9
竖式演算
验算
- 用加法验算：9 + 11 = 20
相关题目
20 - 10 = 10
20 - 12 = 8
20 - 9 = 11
20 - 13 = 7
20 - 8 = 12
20 - 14 = 6
20 - 7 = 13
20 - 15 = 5
21 - 11 = 10
19 - 11 = 8
22 - 11 = 11
18 - 11 = 7
23 - 11 = 12
17 - 11 = 6
24 - 11 = 13
16 - 11 = 5
10 - 1 = 9
11 - 2 = 9
12 - 3 = 9
13 - 4 = 9
14 - 5 = 9
15 - 6 = 9
46 - 19 = 27
61 - 36 = 25
43 - 36 = 7
71 - 16 = 55
86 - 8 = 78
51 - 13 = 38
8 + 1 = 9
9 × 1 = 9