23 加法 21 等于多少？
23 + 21 = 44
23加法21 等于 44
竖式演算
验算
- 用减法验算：44 − 21 = 23
- 用减法验算：44 − 23 = 21
相关题目
23 + 20 = 43
23 + 22 = 45
23 + 19 = 42
23 + 23 = 46
23 + 24 = 47
23 + 18 = 41
23 + 25 = 48
23 + 17 = 40
22 + 21 = 43
24 + 21 = 45
21 + 21 = 42
25 + 21 = 46
20 + 21 = 41
26 + 21 = 47
19 + 21 = 40
27 + 21 = 48
1 + 43 = 44
2 + 42 = 44
3 + 41 = 44
4 + 40 = 44
5 + 39 = 44
6 + 38 = 44
12 + 27 = 39
41 + 47 = 88
22 + 73 = 95
42 + 20 = 62
13 + 12 = 25
61 + 35 = 96
54 - 10 = 44
84 - 40 = 44