69 加法 9 等于多少？
69 + 9 = 78
69加法9 等于 78
竖式演算
验算
- 用减法验算：78 − 9 = 69
- 用减法验算：78 − 69 = 9
相关题目
69 + 8 = 77
69 + 10 = 79
69 + 11 = 80
69 + 7 = 76
69 + 12 = 81
69 + 6 = 75
69 + 13 = 82
69 + 5 = 74
68 + 9 = 77
70 + 9 = 79
67 + 9 = 76
71 + 9 = 80
66 + 9 = 75
72 + 9 = 81
65 + 9 = 74
73 + 9 = 82
1 + 77 = 78
2 + 76 = 78
3 + 75 = 78
4 + 74 = 78
5 + 73 = 78
6 + 72 = 78
78 + 70 = 148
67 + 27 = 94
25 + 36 = 61
75 + 17 = 92
85 + 54 = 139
70 + 31 = 101
94 - 16 = 78
88 - 10 = 78