竖式 · 套题 7

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