20 加法 12 等于多少？
20 + 12 = 32
20加法12 等于 32
竖式演算
验算
- 用减法验算：32 − 12 = 20
- 用减法验算：32 − 20 = 12
相关题目
20 + 11 = 31
20 + 13 = 33
20 + 10 = 30
20 + 14 = 34
20 + 15 = 35
20 + 9 = 29
20 + 16 = 36
20 + 8 = 28
19 + 12 = 31
21 + 12 = 33
22 + 12 = 34
18 + 12 = 30
23 + 12 = 35
17 + 12 = 29
24 + 12 = 36
16 + 12 = 28
1 + 31 = 32
2 + 30 = 32
3 + 29 = 32
4 + 28 = 32
5 + 27 = 32
6 + 26 = 32
27 + 31 = 58
20 + 36 = 56
14 + 51 = 65
54 + 4 = 58
100 + 56 = 156
2 + 54 = 56
89 - 57 = 32
47 - 15 = 32