subtraction/without-borrowing/expert · 套题 37
20 problems
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班级:
日期:
1
4 - 1
=
2
6 - 3
=
3
6 - 3
=
4
8 - 6
=
5
7 - 2
=
6
8 - 3
=
7
2 - 1
=
8
3 - 2
=
9
6 - 3
=
10
8 - 7
=
11
2 - 1
=
12
6 - 4
=
13
7 - 3
=
14
5 - 4
=
15
8 - 2
=
16
5 - 1
=
17
6 - 3
=
18
5 - 1
=
19
8 - 4
=
20
4 - 3
=