1 加法 49 等于多少？
1 + 49 = 50
1加法49 等于 50
竖式演算
验算
- 用减法验算：50 − 49 = 1
- 用减法验算：50 − 1 = 49
相关题目
1 + 48 = 49
1 + 50 = 51
1 + 47 = 48
1 + 51 = 52
1 + 46 = 47
1 + 52 = 53
1 + 53 = 54
1 + 45 = 46
2 + 49 = 51
3 + 49 = 52
4 + 49 = 53
5 + 49 = 54
6 + 49 = 55
7 + 49 = 56
8 + 49 = 57
9 + 49 = 58
2 + 48 = 50
3 + 47 = 50
4 + 46 = 50
5 + 45 = 50
6 + 44 = 50
7 + 43 = 50
43 + 71 = 114
9 + 13 = 22
72 + 76 = 148
91 + 70 = 161
56 + 18 = 74
63 + 17 = 80
79 - 29 = 50
97 - 47 = 50