20 减法 13 等于多少？
20 - 13 = 7
20减法13 等于 7
竖式演算
验算
- 用加法验算：7 + 13 = 20
相关题目
20 - 12 = 8
20 - 14 = 6
20 - 11 = 9
20 - 15 = 5
20 - 10 = 10
20 - 16 = 4
20 - 9 = 11
20 - 17 = 3
19 - 13 = 6
21 - 13 = 8
18 - 13 = 5
22 - 13 = 9
23 - 13 = 10
17 - 13 = 4
24 - 13 = 11
16 - 13 = 3
8 - 1 = 7
9 - 2 = 7
10 - 3 = 7
11 - 4 = 7
12 - 5 = 7
13 - 6 = 7
21 - 4 = 17
55 - 7 = 48
71 - 39 = 32
92 - 15 = 77
93 - 29 = 64
72 - 59 = 13
5 + 2 = 7
1 × 7 = 7