竖式 · 套题 77

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