subtraction/without-borrowing/expert · セット 51
20 problems
名前：
クラス:
日付：
1
3 - 1
=
2
2 - 1
=
3
5 - 4
=
4
2 - 1
=
5
6 - 1
=
6
3 - 2
=
7
2 - 1
=
8
8 - 7
=
9
8 - 6
=
10
4 - 1
=
11
6 - 1
=
12
5 - 3
=
13
8 - 1
=
14
7 - 2
=
15
6 - 4
=
16
8 - 2
=
17
8 - 3
=
18
2 - 1
=
19
3 - 2
=
20
2 - 1
=