31 减法 18 等于多少?
31 - 18 = 13
31减法18 等于 13
竖式演算
验算
- 用加法验算:13 + 18 = 31
相关题目
31 - 17 = 14
31 - 19 = 12
31 - 20 = 11
31 - 16 = 15
31 - 21 = 10
31 - 15 = 16
31 - 22 = 9
31 - 14 = 17
30 - 18 = 12
32 - 18 = 14
29 - 18 = 11
33 - 18 = 15
28 - 18 = 10
34 - 18 = 16
27 - 18 = 9
35 - 18 = 17
14 - 1 = 13
15 - 2 = 13
16 - 3 = 13
17 - 4 = 13
18 - 5 = 13
19 - 6 = 13
70 - 61 = 9
46 - 18 = 28
81 - 9 = 72
85 - 78 = 7
33 - 26 = 7
70 - 15 = 55
8 + 5 = 13
12 + 1 = 13