15 加法 31 等于多少？
15 + 31 = 46
15加法31 等于 46
竖式演算
验算
- 用减法验算：46 − 31 = 15
- 用减法验算：46 − 15 = 31
相关题目
15 + 30 = 45
15 + 32 = 47
15 + 29 = 44
15 + 33 = 48
15 + 28 = 43
15 + 34 = 49
15 + 35 = 50
15 + 27 = 42
14 + 31 = 45
16 + 31 = 47
13 + 31 = 44
17 + 31 = 48
12 + 31 = 43
18 + 31 = 49
11 + 31 = 42
19 + 31 = 50
1 + 45 = 46
2 + 44 = 46
3 + 43 = 46
4 + 42 = 46
5 + 41 = 46
6 + 40 = 46
44 + 12 = 56
22 + 4 = 26
4 + 71 = 75
10 + 63 = 73
5 + 82 = 87
44 + 54 = 98
91 - 45 = 46
65 - 19 = 46