subtraction/facts/starter · 세트 69

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