题目内容

能简算的要简算
39.8÷2.5-
11
2
×3.6+5.5÷
5
18
-360%
2010×
2008
2009

17
13
-(
9
11
+
16
39
×
3
4

75÷[
1
2
×(
3
4
-
1
3
)]
6.75÷
5
12
+42.5×0.24.
39.8÷2.5-
11
2
×3.6+5.5÷
5
18
-360%,
=15.92-5.5×3.6+5.5×3.6-3.6,
=15.92+(5.5×3.6-5.5×3.6)-3.6,
=15.92-3.6,
=12.32;
2010×
2008
2009

=(2009+1)×
2008
2009

=2009×
2008
2009
+1×
2008
2009

=2008+
2008
2009

=2008
2008
2009

17
13
-(
9
11
+
16
39
×
3
4
),
=
17
13
-(
9
11
+
4
13
),
=
17
13
-
4
13
-
9
11

=1-
9
11

=
2
11

6.75÷
5
12
+42.5×0.24,
=6.75×2.4+42.5×0.24,
=67.5×0.24+42.5×0.24,
=(67.5+42.5)×0.24,
=110×0.24,
=(100+10)×0.24,
=24+2.4,
=26.4.
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