50 加法 30 等于多少？
50 + 30 = 80
50加法30 等于 80
竖式演算
验算
- 用减法验算：80 − 30 = 50
- 用减法验算：80 − 50 = 30
相关题目
50 + 29 = 79
50 + 31 = 81
50 + 28 = 78
50 + 32 = 82
50 + 33 = 83
50 + 27 = 77
50 + 34 = 84
50 + 26 = 76
49 + 30 = 79
51 + 30 = 81
48 + 30 = 78
52 + 30 = 82
47 + 30 = 77
53 + 30 = 83
46 + 30 = 76
54 + 30 = 84
1 + 79 = 80
2 + 78 = 80
3 + 77 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
18 + 40 = 58
3 + 76 = 79
43 + 12 = 55
30 + 41 = 71
11 + 67 = 78
56 + 31 = 87
93 - 13 = 80
20 × 4 = 80