问题 解答题
直接写得数
1
3
×15
=
5
6
×
3
10
=
8
9
÷4
=
(
2
3
)3
=
5
8
÷
5
12
=
7
5
×
5
7
=
答案

1
3
×15
=5,
5
6
×
3
10
=
1
4
8
9
÷4
=
2
9
(
2
3
)3
=
8
27
5
8
÷
5
12
=
3
2
7
5
×
5
7
=
25
49

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