13 加法 18 等于多少？
13 + 18 = 31
13加法18 等于 31
竖式演算
验算
- 用减法验算：31 − 18 = 13
- 用减法验算：31 − 13 = 18
相关题目
13 + 17 = 30
13 + 19 = 32
13 + 20 = 33
13 + 16 = 29
13 + 21 = 34
13 + 15 = 28
13 + 22 = 35
13 + 14 = 27
12 + 18 = 30
14 + 18 = 32
11 + 18 = 29
15 + 18 = 33
10 + 18 = 28
16 + 18 = 34
17 + 18 = 35
9 + 18 = 27
1 + 30 = 31
2 + 29 = 31
3 + 28 = 31
4 + 27 = 31
5 + 26 = 31
6 + 25 = 31
94 + 41 = 135
71 + 77 = 148
52 + 63 = 115
74 + 94 = 168
15 + 67 = 82
28 + 91 = 119
82 - 51 = 31
72 - 41 = 31