十の位 · セット 31
20 problems
名前:
クラス:
日付:
1
2 - 1
=
2
9 - 6
=
3
2 - 1
=
4
9 - 6
=
5
9 - 1
=
6
7 - 4
=
7
7 - 3
=
8
8 - 7
=
9
6 - 2
=
10
3 - 2
=
11
8 - 7
=
12
7 - 3
=
13
6 - 5
=
14
7 - 1
=
15
7 - 5
=
16
7 - 3
=
17
4 - 2
=
18
4 - 1
=
19
9 - 8
=
20
7 - 3
=