68 加法 20 等于多少？
68 + 20 = 88
68加法20 等于 88
竖式演算
验算
- 用减法验算：88 − 20 = 68
- 用减法验算：88 − 68 = 20
相关题目
68 + 19 = 87
68 + 21 = 89
68 + 22 = 90
68 + 18 = 86
68 + 23 = 91
68 + 17 = 85
68 + 24 = 92
68 + 16 = 84
67 + 20 = 87
69 + 20 = 89
66 + 20 = 86
70 + 20 = 90
65 + 20 = 85
71 + 20 = 91
64 + 20 = 84
72 + 20 = 92
1 + 87 = 88
2 + 86 = 88
3 + 85 = 88
4 + 84 = 88
5 + 83 = 88
6 + 82 = 88
74 + 23 = 97
6 + 80 = 86
33 + 1 = 34
74 + 4 = 78
25 + 12 = 37
13 + 6 = 19
89 - 1 = 88
91 - 3 = 88