竖式 · 套题 81

20 problems
1
7 - 1 =
2
7 - 2 =
3
2 - 1 =
4
2 - 1 =
5
2 - 1 =
6
8 - 3 =
7
2 - 1 =
8
3 - 1 =
9
5 - 2 =
10
7 - 1 =
11
2 - 1 =
12
8 - 4 =
13
4 - 2 =
14
8 - 1 =
15
7 - 1 =
16
6 - 1 =
17
5 - 1 =
18
3 - 1 =
19
6 - 2 =
20
9 - 5 =
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