28 减法 20 等于多少？
28 - 20 = 8
28减法20 等于 8
竖式演算
验算
- 用加法验算：8 + 20 = 28
相关题目
28 - 19 = 9
28 - 21 = 7
28 - 22 = 6
28 - 18 = 10
28 - 23 = 5
28 - 17 = 11
28 - 24 = 4
28 - 16 = 12
27 - 20 = 7
29 - 20 = 9
30 - 20 = 10
26 - 20 = 6
31 - 20 = 11
25 - 20 = 5
32 - 20 = 12
24 - 20 = 4
9 - 1 = 8
10 - 2 = 8
11 - 3 = 8
12 - 4 = 8
13 - 5 = 8
14 - 6 = 8
92 - 32 = 60
34 - 31 = 3
57 - 42 = 15
59 - 37 = 22
46 - 44 = 2
79 - 28 = 51
7 + 1 = 8
5 + 3 = 8