subtraction/facts/starter · 세트 86

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