题目内容
计算:(0.0081)-
-10×0.027
+lg
-lg25______.
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 4 |
(0.0081)-
-10×0.027
+lg
-lg25
=
-10×
+lg(
÷25)
=
-10×0.3+lg(0.01)
=
-3-2
=-
故答案为:-
.
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 4 |
=
| 1 | |||
|
| 3 | 0.027 |
| 1 |
| 4 |
=
| 1 |
| 0.3 |
=
| 10 |
| 3 |
=-
| 5 |
| 3 |
故答案为:-
| 5 |
| 3 |
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