11 加法 31 等于多少？
11 + 31 = 42
11加法31 等于 42
竖式演算
验算
- 用减法验算：42 − 31 = 11
- 用减法验算：42 − 11 = 31
相关题目
11 + 30 = 41
11 + 32 = 43
11 + 29 = 40
11 + 33 = 44
11 + 28 = 39
11 + 34 = 45
11 + 35 = 46
11 + 27 = 38
10 + 31 = 41
12 + 31 = 43
13 + 31 = 44
9 + 31 = 40
14 + 31 = 45
8 + 31 = 39
15 + 31 = 46
7 + 31 = 38
1 + 41 = 42
2 + 40 = 42
3 + 39 = 42
4 + 38 = 42
5 + 37 = 42
6 + 36 = 42
12 + 71 = 83
44 + 15 = 59
63 + 23 = 86
72 + 11 = 83
60 + 24 = 84
42 + 42 = 84
85 - 43 = 42
91 - 49 = 42