21 加法 65 等于多少？
21 + 65 = 86
21加法65 等于 86
竖式演算
验算
- 用减法验算：86 − 65 = 21
- 用减法验算：86 − 21 = 65
相关题目
21 + 64 = 85
21 + 66 = 87
21 + 67 = 88
21 + 63 = 84
21 + 68 = 89
21 + 62 = 83
21 + 69 = 90
21 + 61 = 82
20 + 65 = 85
22 + 65 = 87
19 + 65 = 84
23 + 65 = 88
24 + 65 = 89
18 + 65 = 83
25 + 65 = 90
17 + 65 = 82
1 + 85 = 86
2 + 84 = 86
3 + 83 = 86
4 + 82 = 86
5 + 81 = 86
6 + 80 = 86
54 + 10 = 64
31 + 5 = 36
43 + 11 = 54
7 + 100 = 107
59 + 10 = 69
84 + 3 = 87
90 - 4 = 86
93 - 7 = 86