45 减法 21 等于多少?
45 - 21 = 24
45减法21 等于 24
竖式演算
验算
- 用加法验算:24 + 21 = 45
相关题目
45 - 20 = 25
45 - 22 = 23
45 - 19 = 26
45 - 23 = 22
45 - 24 = 21
45 - 18 = 27
45 - 25 = 20
45 - 17 = 28
44 - 21 = 23
46 - 21 = 25
43 - 21 = 22
47 - 21 = 26
42 - 21 = 21
48 - 21 = 27
49 - 21 = 28
41 - 21 = 20
25 - 1 = 24
26 - 2 = 24
27 - 3 = 24
28 - 4 = 24
29 - 5 = 24
30 - 6 = 24
54 - 4 = 50
63 - 63 = 0
68 - 23 = 45
42 - 1 = 41
26 - 3 = 23
25 - 3 = 22
1 + 23 = 24
4 + 20 = 24