15 加法 69 等于多少？
15 + 69 = 84
15加法69 等于 84
竖式演算
验算
- 用减法验算：84 − 69 = 15
- 用减法验算：84 − 15 = 69
相关题目
15 + 68 = 83
15 + 70 = 85
15 + 67 = 82
15 + 71 = 86
15 + 66 = 81
15 + 72 = 87
15 + 65 = 80
15 + 73 = 88
14 + 69 = 83
16 + 69 = 85
13 + 69 = 82
17 + 69 = 86
12 + 69 = 81
18 + 69 = 87
11 + 69 = 80
19 + 69 = 88
1 + 83 = 84
2 + 82 = 84
3 + 81 = 84
4 + 80 = 84
5 + 79 = 84
6 + 78 = 84
5 + 15 = 20
91 + 20 = 111
26 + 24 = 50
64 + 29 = 93
72 + 45 = 117
27 + 27 = 54
97 - 13 = 84
21 × 4 = 84