subtraction/without-borrowing/expert · セット 90
20 problems
名前：
クラス:
日付：
1
3 - 1
=
2
3 - 2
=
3
5 - 2
=
4
8 - 7
=
5
5 - 4
=
6
7 - 6
=
7
6 - 3
=
8
2 - 1
=
9
9 - 2
=
10
8 - 6
=
11
2 - 1
=
12
3 - 1
=
13
9 - 5
=
14
2 - 1
=
15
7 - 4
=
16
2 - 1
=
17
8 - 4
=
18
9 - 8
=
19
5 - 3
=
20
7 - 3
=