66 加法 20 等于多少？
66 + 20 = 86
66加法20 等于 86
竖式演算
验算
- 用减法验算：86 − 20 = 66
- 用减法验算：86 − 66 = 20
相关题目
66 + 19 = 85
66 + 21 = 87
66 + 22 = 88
66 + 18 = 84
66 + 23 = 89
66 + 17 = 83
66 + 24 = 90
66 + 16 = 82
65 + 20 = 85
67 + 20 = 87
64 + 20 = 84
68 + 20 = 88
69 + 20 = 89
63 + 20 = 83
70 + 20 = 90
62 + 20 = 82
1 + 85 = 86
2 + 84 = 86
3 + 83 = 86
4 + 82 = 86
5 + 81 = 86
6 + 80 = 86
55 + 40 = 95
3 + 22 = 25
40 + 27 = 67
66 + 13 = 79
14 + 21 = 35
70 + 24 = 94
2 × 43 = 86
90 - 4 = 86