67 加法 21 等于多少？
67 + 21 = 88
67加法21 等于 88
竖式演算
验算
- 用减法验算：88 − 21 = 67
- 用减法验算：88 − 67 = 21
相关题目
67 + 20 = 87
67 + 22 = 89
67 + 19 = 86
67 + 23 = 90
67 + 24 = 91
67 + 18 = 85
67 + 25 = 92
67 + 17 = 84
66 + 21 = 87
68 + 21 = 89
65 + 21 = 86
69 + 21 = 90
64 + 21 = 85
70 + 21 = 91
71 + 21 = 92
63 + 21 = 84
1 + 87 = 88
2 + 86 = 88
3 + 85 = 88
4 + 84 = 88
5 + 83 = 88
6 + 82 = 88
40 + 33 = 73
68 + 20 = 88
4 + 20 = 24
26 + 60 = 86
23 + 76 = 99
21 + 26 = 47
88 × 1 = 88
99 - 11 = 88