31 加法 17 等于多少？
31 + 17 = 48
31加法17 等于 48
竖式演算
验算
- 用减法验算：48 − 17 = 31
- 用减法验算：48 − 31 = 17
相关题目
31 + 16 = 47
31 + 18 = 49
31 + 15 = 46
31 + 19 = 50
31 + 20 = 51
31 + 14 = 45
31 + 21 = 52
31 + 13 = 44
30 + 17 = 47
32 + 17 = 49
29 + 17 = 46
33 + 17 = 50
28 + 17 = 45
34 + 17 = 51
35 + 17 = 52
27 + 17 = 44
1 + 47 = 48
2 + 46 = 48
3 + 45 = 48
4 + 44 = 48
5 + 43 = 48
6 + 42 = 48
1 + 52 = 53
61 + 33 = 94
53 + 30 = 83
100 + 51 = 151
56 + 12 = 68
57 + 31 = 88
63 - 15 = 48
83 - 35 = 48