29 加法 20 等于多少？
29 + 20 = 49
29加法20 等于 49
竖式演算
验算
- 用减法验算：49 − 20 = 29
- 用减法验算：49 − 29 = 20
相关题目
29 + 19 = 48
29 + 21 = 50
29 + 22 = 51
29 + 18 = 47
29 + 23 = 52
29 + 17 = 46
29 + 24 = 53
29 + 16 = 45
28 + 20 = 48
30 + 20 = 50
31 + 20 = 51
27 + 20 = 47
32 + 20 = 52
26 + 20 = 46
33 + 20 = 53
25 + 20 = 45
1 + 48 = 49
2 + 47 = 49
3 + 46 = 49
4 + 45 = 49
5 + 44 = 49
6 + 43 = 49
64 + 13 = 77
10 + 15 = 25
73 + 6 = 79
100 + 5 = 105
39 + 20 = 59
14 + 13 = 27
89 - 40 = 49
72 - 23 = 49