42 加法 30 等于多少？
42 + 30 = 72
42加法30 等于 72
竖式演算
验算
- 用减法验算：72 − 30 = 42
- 用减法验算：72 − 42 = 30
相关题目
42 + 29 = 71
42 + 31 = 73
42 + 28 = 70
42 + 32 = 74
42 + 33 = 75
42 + 27 = 69
42 + 34 = 76
42 + 26 = 68
41 + 30 = 71
43 + 30 = 73
40 + 30 = 70
44 + 30 = 74
39 + 30 = 69
45 + 30 = 75
38 + 30 = 68
46 + 30 = 76
1 + 71 = 72
2 + 70 = 72
3 + 69 = 72
4 + 68 = 72
5 + 67 = 72
6 + 66 = 72
72 + 12 = 84
81 + 16 = 97
63 + 15 = 78
2 + 4 = 6
2 + 27 = 29
40 + 48 = 88
6 × 12 = 72
100 - 28 = 72