3 加法 49 等于多少？
3 + 49 = 52
3加法49 等于 52
竖式演算
验算
- 用减法验算：52 − 49 = 3
- 用减法验算：52 − 3 = 49
相关题目
3 + 48 = 51
3 + 50 = 53
3 + 47 = 50
3 + 51 = 54
3 + 46 = 49
3 + 52 = 55
3 + 53 = 56
3 + 45 = 48
2 + 49 = 51
4 + 49 = 53
1 + 49 = 50
5 + 49 = 54
6 + 49 = 55
7 + 49 = 56
8 + 49 = 57
9 + 49 = 58
1 + 51 = 52
2 + 50 = 52
4 + 48 = 52
5 + 47 = 52
6 + 46 = 52
7 + 45 = 52
62 + 50 = 112
16 + 77 = 93
84 + 55 = 139
66 + 81 = 147
6 + 78 = 84
44 + 94 = 138
63 - 11 = 52
79 - 27 = 52