12 加法 20 等于多少？
12 + 20 = 32
12加法20 等于 32
竖式演算
验算
- 用减法验算：32 − 20 = 12
- 用减法验算：32 − 12 = 20
相关题目
12 + 19 = 31
12 + 21 = 33
12 + 22 = 34
12 + 18 = 30
12 + 23 = 35
12 + 17 = 29
12 + 24 = 36
12 + 16 = 28
11 + 20 = 31
13 + 20 = 33
10 + 20 = 30
14 + 20 = 34
15 + 20 = 35
9 + 20 = 29
16 + 20 = 36
8 + 20 = 28
1 + 31 = 32
2 + 30 = 32
3 + 29 = 32
4 + 28 = 32
5 + 27 = 32
6 + 26 = 32
12 + 35 = 47
76 + 2 = 78
36 + 21 = 57
3 + 62 = 65
4 + 80 = 84
90 + 4 = 94
79 - 47 = 32
95 - 63 = 32