题目内容

计算下面各题,能简算的就简算.
4.67-(2.98+0.67)1.25×0.4×0.25×82013×
2011
2012
14.35÷3.5÷2
2
5
×24+76×
2
5
7
12
+
3
8
)×24.
(1)4.67-(2.98+0.67)
=4.67-2.98-0.67
=4.67-0.67-2.98
=4-2.98
=1.02;

(2)1.25×0.4×0.25×8
=(1.25×8)×(0.4×0.25)
=10×0.1
=1;

(3)2013×
2011
2012

=(2012+1)×
2011
2012

=2012×
2011
2012
+1×
2011
2012

=2011+
2011
2012

=2011
2011
2012


(4)14.35÷3.5÷2
=14.35÷(3.5×2)
=14.35÷7
=2.05;

(5)
2
5
×24+76×
2
5

=
2
5
×(24+76)
=
2
5
×100
=40;

(6)(
7
12
+
3
8
)×24
=
7
12
×24+
3
8
×24
=14+9
=23.
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