21 加法 48 等于多少？
21 + 48 = 69
21加法48 等于 69
竖式演算
验算
- 用减法验算：69 − 48 = 21
- 用减法验算：69 − 21 = 48
相关题目
21 + 47 = 68
21 + 49 = 70
21 + 46 = 67
21 + 50 = 71
21 + 51 = 72
21 + 45 = 66
21 + 52 = 73
21 + 44 = 65
20 + 48 = 68
22 + 48 = 70
19 + 48 = 67
23 + 48 = 71
24 + 48 = 72
18 + 48 = 66
25 + 48 = 73
17 + 48 = 65
1 + 68 = 69
2 + 67 = 69
3 + 66 = 69
4 + 65 = 69
5 + 64 = 69
6 + 63 = 69
27 + 30 = 57
50 + 4 = 54
72 + 20 = 92
90 + 3 = 93
53 + 41 = 94
15 + 14 = 29
82 - 13 = 69
79 - 10 = 69