Десятки · Набор 2

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