题目内容
计算:
(1)0.04-
-(-0.3)0+16
;
(2)
lg25+2log23+lg2
.
(1)0.04-
1 |
2 |
3 |
4 |
(2)
3 |
4 |
2 |
(1)0.04-
-(-0.3)0+16
=0.2-1-1+23=5-1+8=12 …(6分)
(2)
lg25+2log23+lg2
=
lg5+3+
lg2
=
(lg5+lg2)+3
=
…(12分)
1 |
2 |
3 |
4 |
=0.2-1-1+23=5-1+8=12 …(6分)
(2)
3 |
4 |
2 |
=
3 |
2 |
3 |
2 |
=
3 |
2 |
=
9 |
2 |
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