题目内容

计算.
(108÷25)×(75÷18)
3.5×(20.6-16.8÷4.8)
3
2
-
5
6
)×(
2
3
+
6
5
)      
3
14
×[7-4÷(
2
15
+
2
3
)].
(1)(108÷25)×(75÷18),
=
108
25
×
75
18

=18;

(2)3.5×(20.6-16.8÷4.8),
=3.5×(20.6-3.5),
=3.5×17.1,
=59.85;

(3)(
3
2
-
5
6
)×(
2
3
+
6
5
),
=
2
3
×
28
15

=
56
45


(4)
3
14
×[7-4÷(
2
15
+
2
3
)],
=
3
14
×[7-4÷
4
5
],
=
3
14
×[7-4×
5
4
],
=
3
14
×[7-5],
=
3
14
×2,
=
3
7
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