13 加法 31 等于多少？
13 + 31 = 44
13加法31 等于 44
竖式演算
验算
- 用减法验算：44 − 31 = 13
- 用减法验算：44 − 13 = 31
相关题目
13 + 30 = 43
13 + 32 = 45
13 + 29 = 42
13 + 33 = 46
13 + 28 = 41
13 + 34 = 47
13 + 35 = 48
13 + 27 = 40
12 + 31 = 43
14 + 31 = 45
11 + 31 = 42
15 + 31 = 46
10 + 31 = 41
16 + 31 = 47
17 + 31 = 48
9 + 31 = 40
1 + 43 = 44
2 + 42 = 44
3 + 41 = 44
4 + 40 = 44
5 + 39 = 44
6 + 38 = 44
6 + 3 = 9
1 + 68 = 69
7 + 22 = 29
56 + 100 = 156
22 + 61 = 83
24 + 62 = 86
73 - 29 = 44
56 - 12 = 44