20 加法 13 等于多少？
20 + 13 = 33
20加法13 等于 33
竖式演算
验算
- 用减法验算：33 − 13 = 20
- 用减法验算：33 − 20 = 13
相关题目
20 + 12 = 32
20 + 14 = 34
20 + 11 = 31
20 + 15 = 35
20 + 10 = 30
20 + 16 = 36
20 + 17 = 37
20 + 9 = 29
19 + 13 = 32
21 + 13 = 34
22 + 13 = 35
18 + 13 = 31
23 + 13 = 36
17 + 13 = 30
24 + 13 = 37
16 + 13 = 29
1 + 32 = 33
2 + 31 = 33
3 + 30 = 33
4 + 29 = 33
5 + 28 = 33
6 + 27 = 33
82 + 14 = 96
16 + 71 = 87
65 + 10 = 75
32 + 35 = 67
21 + 76 = 97
70 + 3 = 73
99 - 66 = 33
55 - 22 = 33