18 加法 20 等于多少？
18 + 20 = 38
18加法20 等于 38
竖式演算
验算
- 用减法验算：38 − 20 = 18
- 用减法验算：38 − 18 = 20
相关题目
18 + 19 = 37
18 + 21 = 39
18 + 22 = 40
18 + 18 = 36
18 + 23 = 41
18 + 17 = 35
18 + 24 = 42
18 + 16 = 34
17 + 20 = 37
19 + 20 = 39
20 + 20 = 40
16 + 20 = 36
21 + 20 = 41
15 + 20 = 35
22 + 20 = 42
14 + 20 = 34
1 + 37 = 38
2 + 36 = 38
3 + 35 = 38
4 + 34 = 38
5 + 33 = 38
6 + 32 = 38
64 + 21 = 85
21 + 31 = 52
23 + 6 = 29
63 + 23 = 86
65 + 21 = 86
11 + 54 = 65
72 - 34 = 38
99 - 61 = 38