52 加法 21 等于多少？
52 + 21 = 73
52加法21 等于 73
竖式演算
验算
- 用减法验算：73 − 21 = 52
- 用减法验算：73 − 52 = 21
相关题目
52 + 20 = 72
52 + 22 = 74
52 + 19 = 71
52 + 23 = 75
52 + 24 = 76
52 + 18 = 70
52 + 25 = 77
52 + 17 = 69
51 + 21 = 72
53 + 21 = 74
50 + 21 = 71
54 + 21 = 75
49 + 21 = 70
55 + 21 = 76
56 + 21 = 77
48 + 21 = 69
1 + 72 = 73
2 + 71 = 73
3 + 70 = 73
4 + 69 = 73
5 + 68 = 73
6 + 67 = 73
100 + 35 = 135
3 + 64 = 67
53 + 41 = 94
1 + 5 = 6
4 + 35 = 39
15 + 63 = 78
97 - 24 = 73
77 - 4 = 73