1 加法 31 等于多少？
1 + 31 = 32
1加法31 等于 32
竖式演算
验算
- 用减法验算：32 − 31 = 1
- 用减法验算：32 − 1 = 31
相关题目
1 + 30 = 31
1 + 32 = 33
1 + 29 = 30
1 + 33 = 34
1 + 28 = 29
1 + 34 = 35
1 + 35 = 36
1 + 27 = 28
2 + 31 = 33
3 + 31 = 34
4 + 31 = 35
5 + 31 = 36
6 + 31 = 37
7 + 31 = 38
8 + 31 = 39
9 + 31 = 40
2 + 30 = 32
3 + 29 = 32
4 + 28 = 32
5 + 27 = 32
6 + 26 = 32
7 + 25 = 32
76 + 20 = 96
23 + 21 = 44
35 + 50 = 85
12 + 57 = 69
36 + 50 = 86
100 + 3 = 103
71 - 39 = 32
2 × 16 = 32