42 加法 49 等于多少？
42 + 49 = 91
42加法49 等于 91
竖式演算
验算
- 用减法验算：91 − 49 = 42
- 用减法验算：91 − 42 = 49
相关题目
42 + 48 = 90
42 + 50 = 92
42 + 47 = 89
42 + 51 = 93
42 + 46 = 88
42 + 52 = 94
42 + 53 = 95
42 + 45 = 87
41 + 49 = 90
43 + 49 = 92
40 + 49 = 89
44 + 49 = 93
39 + 49 = 88
45 + 49 = 94
38 + 49 = 87
46 + 49 = 95
1 + 90 = 91
2 + 89 = 91
3 + 88 = 91
4 + 87 = 91
5 + 86 = 91
6 + 85 = 91
5 + 25 = 30
6 + 78 = 84
85 + 92 = 177
63 + 42 = 105
94 + 33 = 127
82 + 86 = 168
7 × 13 = 91
91 × 1 = 91