9 加法 42 等于多少？
9 + 42 = 51
9加法42 等于 51
竖式演算
验算
- 用减法验算：51 − 42 = 9
- 用减法验算：51 − 9 = 42
相关题目
9 + 41 = 50
9 + 43 = 52
9 + 40 = 49
9 + 44 = 53
9 + 39 = 48
9 + 45 = 54
9 + 38 = 47
9 + 46 = 55
8 + 42 = 50
10 + 42 = 52
11 + 42 = 53
7 + 42 = 49
12 + 42 = 54
6 + 42 = 48
13 + 42 = 55
5 + 42 = 47
1 + 50 = 51
2 + 49 = 51
3 + 48 = 51
4 + 47 = 51
5 + 46 = 51
6 + 45 = 51
50 + 60 = 110
72 + 53 = 125
31 + 84 = 115
6 + 16 = 22
10 + 91 = 101
71 + 84 = 155
53 - 2 = 51
77 - 26 = 51