subtraction/with-borrowing/hard · 套题 50
20 problems
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班级:
日期:
1
2 - 1
=
2
3 - 2
=
3
3 - 1
=
4
3 - 1
=
5
9 - 2
=
6
8 - 3
=
7
4 - 3
=
8
4 - 1
=
9
3 - 1
=
10
2 - 1
=
11
7 - 6
=
12
8 - 7
=
13
8 - 5
=
14
7 - 3
=
15
2 - 1
=
16
5 - 3
=
17
7 - 2
=
18
7 - 2
=
19
6 - 1
=
20
9 - 7
=