42 加法 31 等于多少？
42 + 31 = 73
42加法31 等于 73
竖式演算
验算
- 用减法验算：73 − 31 = 42
- 用减法验算：73 − 42 = 31
相关题目
42 + 30 = 72
42 + 32 = 74
42 + 29 = 71
42 + 33 = 75
42 + 28 = 70
42 + 34 = 76
42 + 35 = 77
42 + 27 = 69
41 + 31 = 72
43 + 31 = 74
40 + 31 = 71
44 + 31 = 75
39 + 31 = 70
45 + 31 = 76
38 + 31 = 69
46 + 31 = 77
1 + 72 = 73
2 + 71 = 73
3 + 70 = 73
4 + 69 = 73
5 + 68 = 73
6 + 67 = 73
16 + 100 = 116
69 + 20 = 89
33 + 66 = 99
40 + 50 = 90
100 + 3 = 103
55 + 34 = 89
95 - 22 = 73
83 - 10 = 73