31 加法 11 等于多少？
31 + 11 = 42
31加法11 等于 42
竖式演算
验算
- 用减法验算：42 − 11 = 31
- 用减法验算：42 − 31 = 11
相关题目
31 + 10 = 41
31 + 12 = 43
31 + 13 = 44
31 + 9 = 40
31 + 14 = 45
31 + 8 = 39
31 + 15 = 46
31 + 7 = 38
30 + 11 = 41
32 + 11 = 43
29 + 11 = 40
33 + 11 = 44
28 + 11 = 39
34 + 11 = 45
35 + 11 = 46
27 + 11 = 38
1 + 41 = 42
2 + 40 = 42
3 + 39 = 42
4 + 38 = 42
5 + 37 = 42
6 + 36 = 42
57 + 20 = 77
13 + 73 = 86
35 + 21 = 56
11 + 74 = 85
38 + 61 = 99
97 + 1 = 98
70 - 28 = 42
51 - 9 = 42