20 加法 17 等于多少？
20 + 17 = 37
20加法17 等于 37
竖式演算
验算
- 用减法验算：37 − 17 = 20
- 用减法验算：37 − 20 = 17
相关题目
20 + 16 = 36
20 + 18 = 38
20 + 15 = 35
20 + 19 = 39
20 + 20 = 40
20 + 14 = 34
20 + 21 = 41
20 + 13 = 33
19 + 17 = 36
21 + 17 = 38
22 + 17 = 39
18 + 17 = 35
23 + 17 = 40
17 + 17 = 34
24 + 17 = 41
16 + 17 = 33
1 + 36 = 37
2 + 35 = 37
3 + 34 = 37
4 + 33 = 37
5 + 32 = 37
6 + 31 = 37
32 + 27 = 59
51 + 23 = 74
82 + 5 = 87
43 + 6 = 49
2 + 67 = 69
63 + 25 = 88
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66 - 29 = 37