subtraction/with-borrowing/hard · 套题 90
20 problems
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班级:
日期:
1
2 - 1
=
2
2 - 1
=
3
2 - 1
=
4
3 - 2
=
5
7 - 5
=
6
3 - 2
=
7
3 - 2
=
8
2 - 1
=
9
2 - 1
=
10
8 - 4
=
11
8 - 7
=
12
6 - 3
=
13
9 - 6
=
14
9 - 7
=
15
8 - 6
=
16
9 - 1
=
17
8 - 5
=
18
3 - 2
=
19
4 - 2
=
20
3 - 2
=