subtraction/with-borrowing/hard · 套题 66
20 problems
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班级:
日期:
1
6 - 2
=
2
9 - 2
=
3
2 - 1
=
4
6 - 1
=
5
8 - 4
=
6
4 - 1
=
7
6 - 2
=
8
3 - 1
=
9
8 - 7
=
10
3 - 1
=
11
8 - 1
=
12
2 - 1
=
13
2 - 1
=
14
9 - 5
=
15
6 - 4
=
16
7 - 2
=
17
5 - 3
=
18
9 - 2
=
19
7 - 6
=
20
5 - 1
=