题目内容

(1)9750÷25+75(2)(2.32+1.8)×6.5(3)101×7.8
(4)
5
8
×
8
15
+
3
4
÷
1
4
(5)
1
3
÷
[
3
4
-(
1
18
+
5
12
)].
(1)9750÷25+75,
=390+75,
=465;

(2)(2.32+1.8)×6.5,
=4.12×6.5,
=26.78;

(3)101×7.8,
=(100+1)×7.8,
=100×7.8+1×7.8,
=780+7.8,
=787.8;

(4)
5
8
×
8
15
+
3
4
÷
1
4

=
1
3
+3,
=3
1
3


(5)
1
3
÷
[
3
4
-(
1
18
+
5
12
)],
=
1
3
÷
[
3
4
-
17
36
],
=
1
3
÷
5
18

=
6
5
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