21 加法 64 等于多少？
21 + 64 = 85
21加法64 等于 85
竖式演算
验算
- 用减法验算：85 − 64 = 21
- 用减法验算：85 − 21 = 64
相关题目
21 + 65 = 86
21 + 63 = 84
21 + 66 = 87
21 + 62 = 83
21 + 67 = 88
21 + 61 = 82
21 + 68 = 89
21 + 60 = 81
20 + 64 = 84
22 + 64 = 86
19 + 64 = 83
23 + 64 = 87
24 + 64 = 88
18 + 64 = 82
25 + 64 = 89
17 + 64 = 81
1 + 84 = 85
2 + 83 = 85
3 + 82 = 85
4 + 81 = 85
5 + 80 = 85
6 + 79 = 85
83 + 3 = 86
31 + 40 = 71
2 + 35 = 37
10 + 68 = 78
2 + 74 = 76
26 + 21 = 47
98 - 13 = 85
92 - 7 = 85