21 加法 23 等于多少？
21 + 23 = 44
21加法23 等于 44
竖式演算
验算
- 用减法验算：44 − 23 = 21
- 用减法验算：44 − 21 = 23
相关题目
21 + 22 = 43
21 + 24 = 45
21 + 21 = 42
21 + 25 = 46
21 + 20 = 41
21 + 26 = 47
21 + 19 = 40
21 + 27 = 48
20 + 23 = 43
22 + 23 = 45
19 + 23 = 42
23 + 23 = 46
24 + 23 = 47
18 + 23 = 41
25 + 23 = 48
17 + 23 = 40
1 + 43 = 44
2 + 42 = 44
3 + 41 = 44
4 + 40 = 44
5 + 39 = 44
6 + 38 = 44
22 + 61 = 83
27 + 70 = 97
3 + 71 = 74
10 + 33 = 43
14 + 81 = 95
90 + 8 = 98
60 - 16 = 44
45 - 1 = 44