17 加法 3 等于多少？
17 + 3 = 20
17加法3 等于 20
竖式演算
验算
- 用减法验算：20 − 3 = 17
- 用减法验算：20 − 17 = 3
相关题目
17 + 2 = 19
17 + 4 = 21
17 + 1 = 18
17 + 5 = 22
17 + 6 = 23
17 + 7 = 24
17 + 8 = 25
17 + 9 = 26
16 + 3 = 19
18 + 3 = 21
15 + 3 = 18
19 + 3 = 22
20 + 3 = 23
14 + 3 = 17
21 + 3 = 24
13 + 3 = 16
1 + 19 = 20
2 + 18 = 20
3 + 17 = 20
4 + 16 = 20
5 + 15 = 20
6 + 14 = 20
21 + 19 = 40
90 + 59 = 149
72 + 35 = 107
47 + 62 = 109
32 + 82 = 114
60 + 66 = 126
24 - 4 = 20
96 - 76 = 20