21 加法 61 等于多少？
21 + 61 = 82
21加法61 等于 82
竖式演算
验算
- 用减法验算：82 − 61 = 21
- 用减法验算：82 − 21 = 61
相关题目
21 + 60 = 81
21 + 62 = 83
21 + 59 = 80
21 + 63 = 84
21 + 58 = 79
21 + 64 = 85
21 + 65 = 86
21 + 57 = 78
20 + 61 = 81
22 + 61 = 83
19 + 61 = 80
23 + 61 = 84
24 + 61 = 85
18 + 61 = 79
25 + 61 = 86
17 + 61 = 78
1 + 81 = 82
2 + 80 = 82
3 + 79 = 82
4 + 78 = 82
5 + 77 = 82
6 + 76 = 82
56 + 100 = 156
81 + 17 = 98
25 + 12 = 37
43 + 23 = 66
20 + 57 = 77
62 + 14 = 76
98 - 16 = 82
2 × 41 = 82