20 减法 17 等于多少？
20 - 17 = 3
20减法17 等于 3
竖式演算
验算
- 用加法验算：3 + 17 = 20
相关题目
20 - 16 = 4
20 - 18 = 2
20 - 15 = 5
20 - 19 = 1
20 - 14 = 6
20 - 20 = 0
20 - 13 = 7
20 - 12 = 8
19 - 17 = 2
21 - 17 = 4
18 - 17 = 1
22 - 17 = 5
17 - 17 = 0
23 - 17 = 6
24 - 17 = 7
25 - 17 = 8
4 - 1 = 3
5 - 2 = 3
6 - 3 = 3
7 - 4 = 3
8 - 5 = 3
9 - 6 = 3
95 - 78 = 17
91 - 69 = 22
95 - 59 = 36
12 - 5 = 7
34 - 16 = 18
53 - 19 = 34
1 × 3 = 3
2 + 1 = 3