题目内容

计算下面各题:
(1)540÷12×9+482
(2)
7
10
÷
1
5
+
3
8
×
2
3

(3)(
5
6
-
1
4
+
5
12
)×24
(4)20÷[1-(
1
4
+
1
3
)].
(1)540÷12×9+482,
=45×9+482,
=405+482,
=887;

(2)
7
10
÷
1
5
+
3
8
×
2
3

=
7
10
×5+
1
4

=
7
2
+
1
4

=
15
4


(3)(
5
6
-
1
4
+
5
12
)×24,
=
5
6
×24-
1
4
×24+
5
12
×24,
=20-6+10,
=24;

(4)20÷[1-(
1
4
+
1
3
)],
=20÷[1-
7
12
],
=20÷
5
12

=20×
12
5

=48.
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