38 减法 21 等于多少？
38 - 21 = 17
38减法21 等于 17
竖式演算
验算
- 用加法验算：17 + 21 = 38
相关题目
38 - 20 = 18
38 - 22 = 16
38 - 19 = 19
38 - 23 = 15
38 - 24 = 14
38 - 18 = 20
38 - 25 = 13
38 - 17 = 21
37 - 21 = 16
39 - 21 = 18
40 - 21 = 19
36 - 21 = 15
41 - 21 = 20
35 - 21 = 14
42 - 21 = 21
34 - 21 = 13
18 - 1 = 17
19 - 2 = 17
20 - 3 = 17
21 - 4 = 17
22 - 5 = 17
23 - 6 = 17
95 - 95 = 0
31 - 30 = 1
99 - 42 = 57
82 - 51 = 31
99 - 78 = 21
44 - 30 = 14
1 + 16 = 17
3 + 14 = 17