2 加法 29 等于多少？
2 + 29 = 31
2加法29 等于 31
竖式演算
验算
- 用减法验算：31 − 29 = 2
- 用减法验算：31 − 2 = 29
相关题目
2 + 28 = 30
2 + 30 = 32
2 + 31 = 33
2 + 27 = 29
2 + 32 = 34
2 + 26 = 28
2 + 33 = 35
2 + 25 = 27
1 + 29 = 30
3 + 29 = 32
4 + 29 = 33
5 + 29 = 34
6 + 29 = 35
7 + 29 = 36
8 + 29 = 37
9 + 29 = 38
1 + 30 = 31
3 + 28 = 31
4 + 27 = 31
5 + 26 = 31
6 + 25 = 31
7 + 24 = 31
70 + 35 = 105
94 + 80 = 174
40 + 90 = 130
45 + 27 = 72
82 + 30 = 112
67 + 4 = 71
65 - 34 = 31
77 - 46 = 31