21 加法 27 等于多少？
21 + 27 = 48
21加法27 等于 48
竖式演算
验算
- 用减法验算：48 − 27 = 21
- 用减法验算：48 − 21 = 27
相关题目
21 + 26 = 47
21 + 28 = 49
21 + 29 = 50
21 + 25 = 46
21 + 30 = 51
21 + 24 = 45
21 + 31 = 52
21 + 23 = 44
20 + 27 = 47
22 + 27 = 49
19 + 27 = 46
23 + 27 = 50
24 + 27 = 51
18 + 27 = 45
25 + 27 = 52
17 + 27 = 44
1 + 47 = 48
2 + 46 = 48
3 + 45 = 48
4 + 44 = 48
5 + 43 = 48
6 + 42 = 48
55 + 1 = 56
1 + 14 = 15
31 + 23 = 54
11 + 86 = 97
51 + 23 = 74
57 + 12 = 69
4 × 12 = 48
65 - 17 = 48