3 加法 42 等于多少？
3 + 42 = 45
3加法42 等于 45
竖式演算
验算
- 用减法验算：45 − 42 = 3
- 用减法验算：45 − 3 = 42
相关题目
3 + 41 = 44
3 + 43 = 46
3 + 40 = 43
3 + 44 = 47
3 + 39 = 42
3 + 45 = 48
3 + 38 = 41
3 + 46 = 49
2 + 42 = 44
4 + 42 = 46
1 + 42 = 43
5 + 42 = 47
6 + 42 = 48
7 + 42 = 49
8 + 42 = 50
9 + 42 = 51
1 + 44 = 45
2 + 43 = 45
4 + 41 = 45
5 + 40 = 45
6 + 39 = 45
7 + 38 = 45
43 + 30 = 73
69 + 30 = 99
34 + 51 = 85
95 + 1 = 96
50 + 32 = 82
25 + 52 = 77
52 - 7 = 45
61 - 16 = 45