9 加法 2 等于多少？
9 + 2 = 11
9加法2 等于 11
竖式演算
验算
- 用减法验算：11 − 2 = 9
- 用减法验算：11 − 9 = 2
相关题目
9 + 1 = 10
9 + 3 = 12
9 + 4 = 13
9 + 5 = 14
9 + 6 = 15
9 + 7 = 16
9 + 8 = 17
9 + 9 = 18
8 + 2 = 10
10 + 2 = 12
11 + 2 = 13
7 + 2 = 9
12 + 2 = 14
6 + 2 = 8
13 + 2 = 15
5 + 2 = 7
1 + 10 = 11
2 + 9 = 11
3 + 8 = 11
4 + 7 = 11
5 + 6 = 11
6 + 5 = 11
19 + 58 = 77
87 + 52 = 139
5 + 76 = 81
62 + 77 = 139
15 + 66 = 81
9 + 82 = 91
91 - 80 = 11
62 - 51 = 11