13 加法 20 等于多少？
13 + 20 = 33
13加法20 等于 33
竖式演算
验算
- 用减法验算：33 − 20 = 13
- 用减法验算：33 − 13 = 20
相关题目
13 + 19 = 32
13 + 21 = 34
13 + 22 = 35
13 + 18 = 31
13 + 23 = 36
13 + 17 = 30
13 + 24 = 37
13 + 16 = 29
12 + 20 = 32
14 + 20 = 34
11 + 20 = 31
15 + 20 = 35
10 + 20 = 30
16 + 20 = 36
17 + 20 = 37
9 + 20 = 29
1 + 32 = 33
2 + 31 = 33
3 + 30 = 33
4 + 29 = 33
5 + 28 = 33
6 + 27 = 33
12 + 31 = 43
28 + 11 = 39
72 + 23 = 95
11 + 35 = 46
52 + 35 = 87
10 + 50 = 60
38 - 5 = 33
76 - 43 = 33