64 加法 21 等于多少？
64 + 21 = 85
64加法21 等于 85
竖式演算
验算
- 用减法验算：85 − 21 = 64
- 用减法验算：85 − 64 = 21
相关题目
64 + 20 = 84
64 + 22 = 86
64 + 19 = 83
64 + 23 = 87
64 + 24 = 88
64 + 18 = 82
64 + 25 = 89
64 + 17 = 81
65 + 21 = 86
63 + 21 = 84
66 + 21 = 87
62 + 21 = 83
67 + 21 = 88
61 + 21 = 82
68 + 21 = 89
60 + 21 = 81
1 + 84 = 85
2 + 83 = 85
3 + 82 = 85
4 + 81 = 85
5 + 80 = 85
6 + 79 = 85
1 + 2 = 3
36 + 3 = 39
5 + 1 = 6
93 + 4 = 97
76 + 10 = 86
12 + 64 = 76
86 - 1 = 85
96 - 11 = 85