问题 解答题
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.
答案

(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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