31 加法 4 等于多少？
31 + 4 = 35
31加法4 等于 35
竖式演算
验算
- 用减法验算：35 − 4 = 31
- 用减法验算：35 − 31 = 4
相关题目
31 + 3 = 34
31 + 5 = 36
31 + 2 = 33
31 + 6 = 37
31 + 1 = 32
31 + 7 = 38
31 + 8 = 39
31 + 9 = 40
30 + 4 = 34
32 + 4 = 36
29 + 4 = 33
33 + 4 = 37
28 + 4 = 32
34 + 4 = 38
35 + 4 = 39
27 + 4 = 31
1 + 34 = 35
2 + 33 = 35
3 + 32 = 35
4 + 31 = 35
5 + 30 = 35
6 + 29 = 35
100 + 21 = 121
14 + 54 = 68
64 + 23 = 87
43 + 40 = 83
69 + 10 = 79
7 + 42 = 49
63 - 28 = 35
69 - 34 = 35