23 减法 20 等于多少？
23 - 20 = 3
23减法20 等于 3
竖式演算
验算
- 用加法验算：3 + 20 = 23
相关题目
23 - 19 = 4
23 - 21 = 2
23 - 18 = 5
23 - 22 = 1
23 - 17 = 6
23 - 23 = 0
23 - 16 = 7
23 - 15 = 8
22 - 20 = 2
24 - 20 = 4
21 - 20 = 1
25 - 20 = 5
20 - 20 = 0
26 - 20 = 6
27 - 20 = 7
28 - 20 = 8
4 - 1 = 3
5 - 2 = 3
6 - 3 = 3
7 - 4 = 3
8 - 5 = 3
9 - 6 = 3
66 - 11 = 55
67 - 30 = 37
88 - 70 = 18
47 - 42 = 5
96 - 31 = 65
66 - 40 = 26
1 × 3 = 3
2 + 1 = 3