竖式 · 套题 31

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