(1)0.35-10-(0.2+6.37÷0.7)×0.5
1个回答

(1)0.35-10-(0.2+6.37÷0.7)×0.5,

=-9.65-(0.2+9.1)×0.5,

=-9.65-9.3×0.5,

=-9.65-4.65,

=-(9.65+4.65),

=-14.3;

(2)91×

1

31 +9÷13-1÷13×100,

=91×

1

31 +9×

1

13 -

1

13 ×100,

=(91+9-100)×

1

13 ,

=0×

1

13 ,

=0;

(3)(

4

51 -

4

71 )×17-

3

71 ,

=

4

51 ×17-

4

71 ×17-

3

71 ,

=

4

3 -(

68

71 +

3

71 ),

=

4

3 -1,

=

1

3 ;

(4)53.5×1.9+61×1.25+41×8.1,

=53.5×(2-0.1)+(60+1)×1.25+(40+1)×8.1,

=53.5×2-53.5×0.1+60×1.25+1×1.25+40×8.1+1×8.1,

=107-5.35+75+1.25+324+8.1,

=(107+75+324)+(1.25-5.35+8.1),

=506+4,

=510;

(5)12×[(

1

2 +

1

3 )÷

5

6 ],

=12×[

5

6 ÷

5

6 ],

=12×1,

=12;

(6)

7

9 ×

14

15 +56×

1

9 +

1

9 ×

7

15 ,

=

1

9 ×7×

14

15 +56×

1

9 +

1

9 ×

7

15 ,

=(

98

15 +56+

7

15 )×

1

9 ,

=63×

1

9 ,

=7.