subtraction/with-borrowing/hard · 套题 97
20 problems
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班级:
日期:
1
3 - 2
=
2
3 - 2
=
3
2 - 1
=
4
7 - 2
=
5
9 - 5
=
6
6 - 3
=
7
4 - 1
=
8
6 - 5
=
9
5 - 3
=
10
7 - 6
=
11
4 - 1
=
12
5 - 1
=
13
3 - 1
=
14
5 - 2
=
15
8 - 3
=
16
5 - 3
=
17
7 - 2
=
18
9 - 8
=
19
3 - 2
=
20
3 - 1
=