38 加法 31 等于多少？
38 + 31 = 69
38加法31 等于 69
竖式演算
验算
- 用减法验算：69 − 31 = 38
- 用减法验算：69 − 38 = 31
相关题目
38 + 30 = 68
38 + 32 = 70
38 + 29 = 67
38 + 33 = 71
38 + 28 = 66
38 + 34 = 72
38 + 35 = 73
38 + 27 = 65
37 + 31 = 68
39 + 31 = 70
40 + 31 = 71
36 + 31 = 67
41 + 31 = 72
35 + 31 = 66
42 + 31 = 73
34 + 31 = 65
1 + 68 = 69
2 + 67 = 69
3 + 66 = 69
4 + 65 = 69
5 + 64 = 69
6 + 63 = 69
12 + 11 = 23
100 + 42 = 142
74 + 3 = 77
24 + 64 = 88
44 + 14 = 58
52 + 4 = 56
89 - 20 = 69
76 - 7 = 69