3 加法 31 等于多少？
3 + 31 = 34
3加法31 等于 34
竖式演算
验算
- 用减法验算：34 − 31 = 3
- 用减法验算：34 − 3 = 31
相关题目
3 + 30 = 33
3 + 32 = 35
3 + 29 = 32
3 + 33 = 36
3 + 28 = 31
3 + 34 = 37
3 + 35 = 38
3 + 27 = 30
2 + 31 = 33
4 + 31 = 35
1 + 31 = 32
5 + 31 = 36
6 + 31 = 37
7 + 31 = 38
8 + 31 = 39
9 + 31 = 40
1 + 33 = 34
2 + 32 = 34
4 + 30 = 34
5 + 29 = 34
6 + 28 = 34
7 + 27 = 34
37 + 50 = 87
40 + 45 = 85
1 + 26 = 27
12 + 54 = 66
16 + 21 = 37
2 + 10 = 12
60 - 26 = 34
59 - 25 = 34