31 加法 15 等于多少？
31 + 15 = 46
31加法15 等于 46
竖式演算
验算
- 用减法验算：46 − 15 = 31
- 用减法验算：46 − 31 = 15
相关题目
31 + 14 = 45
31 + 16 = 47
31 + 13 = 44
31 + 17 = 48
31 + 12 = 43
31 + 18 = 49
31 + 11 = 42
31 + 19 = 50
30 + 15 = 45
32 + 15 = 47
29 + 15 = 44
33 + 15 = 48
28 + 15 = 43
34 + 15 = 49
35 + 15 = 50
27 + 15 = 42
1 + 45 = 46
2 + 44 = 46
3 + 43 = 46
4 + 42 = 46
5 + 41 = 46
6 + 40 = 46
16 + 40 = 56
20 + 1 = 21
3 + 21 = 24
14 + 63 = 77
5 + 93 = 98
23 + 74 = 97
52 - 6 = 46
94 - 48 = 46