17 加法 20 等于多少？
17 + 20 = 37
17加法20 等于 37
竖式演算
验算
- 用减法验算：37 − 20 = 17
- 用减法验算：37 − 17 = 20
相关题目
17 + 19 = 36
17 + 21 = 38
17 + 22 = 39
17 + 18 = 35
17 + 23 = 40
17 + 17 = 34
17 + 24 = 41
17 + 16 = 33
16 + 20 = 36
18 + 20 = 38
15 + 20 = 35
19 + 20 = 39
20 + 20 = 40
14 + 20 = 34
21 + 20 = 41
13 + 20 = 33
1 + 36 = 37
2 + 35 = 37
3 + 34 = 37
4 + 33 = 37
5 + 32 = 37
6 + 31 = 37
63 + 1 = 64
40 + 15 = 55
34 + 12 = 46
68 + 30 = 98
13 + 71 = 84
73 + 26 = 99
94 - 57 = 37
80 - 43 = 37