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
22 + 73 = 95
44 + 50 = 94
24 + 63 = 87
2 + 2 = 4
1 + 50 = 51
2 + 56 = 58
92 - 58 = 34
77 - 43 = 34