问题 解答题
7
10
÷
5
7
=
8
9
×
27
16
=
7
8
÷
7
8
=
6
5
×21-
6
5
=
37
25
=
3-1.8×
5
9
=
4
3
-(
1
2
+
1
3
)
=
1
3
×
3
4
÷
1
3
×
3
4
=
答案

7
10
÷
5
7
=
49
50
8
9
×
27
16
=
3
2
7
8
÷
7
8
=1,
6
5
×21-
6
5
=24,
37
25
=0,
3-1.8×
5
9
=2,
4
3
-(
1
2
+
1
3
)
=
1
2
1
3
×
3
4
÷
1
3
×
3
4
=
9
16

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