subtraction/without-borrowing/expert · セット 79
20 problems
名前：
クラス:
日付：
1
5 - 3
=
2
2 - 1
=
3
2 - 1
=
4
3 - 1
=
5
9 - 2
=
6
2 - 1
=
7
6 - 4
=
8
5 - 1
=
9
8 - 6
=
10
8 - 7
=
11
2 - 1
=
12
7 - 3
=
13
4 - 2
=
14
7 - 4
=
15
3 - 1
=
16
4 - 1
=
17
7 - 4
=
18
2 - 1
=
19
8 - 4
=
20
6 - 3
=