21 加法 52 等于多少？
21 + 52 = 73
21加法52 等于 73
竖式演算
验算
- 用减法验算：73 − 52 = 21
- 用减法验算：73 − 21 = 52
相关题目
21 + 51 = 72
21 + 53 = 74
21 + 50 = 71
21 + 54 = 75
21 + 49 = 70
21 + 55 = 76
21 + 56 = 77
21 + 48 = 69
20 + 52 = 72
22 + 52 = 74
19 + 52 = 71
23 + 52 = 75
24 + 52 = 76
18 + 52 = 70
25 + 52 = 77
17 + 52 = 69
1 + 72 = 73
2 + 71 = 73
3 + 70 = 73
4 + 69 = 73
5 + 68 = 73
6 + 67 = 73
38 + 51 = 89
25 + 74 = 99
23 + 71 = 94
46 + 22 = 68
15 + 41 = 56
10 + 82 = 92
82 - 9 = 73
74 - 1 = 73