12 加法 5 等于多少？
12 + 5 = 17
12加法5 等于 17
竖式演算
验算
- 用减法验算：17 − 5 = 12
- 用减法验算：17 − 12 = 5
相关题目
12 + 4 = 16
12 + 6 = 18
12 + 3 = 15
12 + 7 = 19
12 + 2 = 14
12 + 8 = 20
12 + 1 = 13
12 + 9 = 21
11 + 5 = 16
13 + 5 = 18
10 + 5 = 15
14 + 5 = 19
15 + 5 = 20
9 + 5 = 14
16 + 5 = 21
8 + 5 = 13
1 + 16 = 17
2 + 15 = 17
3 + 14 = 17
4 + 13 = 17
5 + 12 = 17
6 + 11 = 17
41 + 16 = 57
100 + 43 = 143
37 + 21 = 58
20 + 66 = 86
19 + 20 = 39
21 + 60 = 81
21 - 4 = 17
19 - 2 = 17