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计算:(217+318)−(1.375−67)=83279125÷0.353.3÷0.23÷0.91×16.1÷0.82=2014+2013×20152014×2015−1+2015+2014×20162015×2016−1+2016+2015×20172016×2017−1+2017+2016×20182017×2018−1=

题目详情
计算:
(2
1
7
+3
1
8
)−(1.375−
6
7
)=
832
79
125
÷0.3  
53.3÷0.23÷0.91×16.1÷0.82=
2014+2013×2015
2014×2015−1
+
2015+2014×2016
2015×2016−1
+
2016+2015×2017
2016×2017−1
+
2017+2016×2018
2017×2018−1
=
▼优质解答
答案和解析
(1)(2
1
7
+3
1
8
)-(1.375-
6
7

=(2
1
7
+3
1
8
)-(1
3
8
-
6
7

=2
1
7
+3
1
8
-1
3
8
+
6
7

=(2
1
7
+
6
7
)+(3
1
8
-1
3
8

=3+1
3
4

=4
3
4


(2)832
79
125
÷0.3
=(831+
204
125
)÷0.3
=831÷0.3+
204
125
÷0.3
=2770+
204
125
×
3
10

=2770+
276
575

=2770
276
575


(3)53.3÷0.23÷0.91×16.1÷0.82
=53.3÷0.82×(16.1÷0.23)÷0.91
=65×70÷0.91
=13×5×10×7÷0.7÷1.3
=10×5×10×10
=5000

(4)
2014+2013×2015
2014×2015−1
+
2015+2014×2016
2015×2016−1
+
2016+2015×2017
2016×2017−1
+
2017+2016×2018
2017×2018−1

=
2014+(2014−1)×2015
2014×2015−1
+
2015+(2015−1)×2016
2015×2016−1
+