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
1 + 54 = 55
31 + 31 = 62
25 + 21 = 46
56 + 33 = 89
24 + 1 = 25
53 + 15 = 68
95 - 10 = 85
87 - 2 = 85