20 加法 68 等于多少？
20 + 68 = 88
20加法68 等于 88
竖式演算
验算
- 用减法验算：88 − 68 = 20
- 用减法验算：88 − 20 = 68
相关题目
20 + 67 = 87
20 + 69 = 89
20 + 66 = 86
20 + 70 = 90
20 + 65 = 85
20 + 71 = 91
20 + 64 = 84
20 + 72 = 92
19 + 68 = 87
21 + 68 = 89
22 + 68 = 90
18 + 68 = 86
23 + 68 = 91
17 + 68 = 85
24 + 68 = 92
16 + 68 = 84
1 + 87 = 88
2 + 86 = 88
3 + 85 = 88
4 + 84 = 88
5 + 83 = 88
6 + 82 = 88
34 + 30 = 64
31 + 46 = 77
5 + 31 = 36
82 + 12 = 94
47 + 100 = 147
1 + 15 = 16
100 - 12 = 88
99 - 11 = 88