11 加法 69 等于多少？
11 + 69 = 80
11加法69 等于 80
竖式演算
验算
- 用减法验算：80 − 69 = 11
- 用减法验算：80 − 11 = 69
相关题目
11 + 68 = 79
11 + 70 = 81
11 + 67 = 78
11 + 71 = 82
11 + 66 = 77
11 + 72 = 83
11 + 65 = 76
11 + 73 = 84
10 + 69 = 79
12 + 69 = 81
13 + 69 = 82
9 + 69 = 78
14 + 69 = 83
8 + 69 = 77
15 + 69 = 84
7 + 69 = 76
1 + 79 = 80
2 + 78 = 80
3 + 77 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
4 + 87 = 91
18 + 33 = 51
71 + 67 = 138
27 + 13 = 40
22 + 69 = 91
62 + 74 = 136
95 - 15 = 80
92 - 12 = 80