计算:(0.0081)-1/4-10×0.0271/3+lg1/4-lg25 _ .

问题描述:

计算:(0.0081)-

1
4
-10×0.027
1
3
+lg
1
4
-lg25 ___ .

(0.0081)-

1
4
-10×0.027
1
3
+lg
1
4
-lg25
=
1
4 0.0081
 
-10×
3 0.027 
+lg(
1
4
÷25)

=
1
0.3
 
-10×0.3+lg(0.01)

=
10
3
-3-2

=-
5
3

故答案为:-
5
3