问题 解答题
计算:
(1)0.0081
1
4
+(4-
3
4
)2+(
8
)-
4
3
-16-0.75

(2)log3
27
+lg25+lg4+7log72+(-9.8)0
答案

(1)原式=(0.34)

1
4
+22×(-
3
4
)×2
+2
3
2
×(-
4
3
)
-24×(-0.75)

=0.3+

1
8
+
1
4
-
1
8

=

11
20

(2)原式=log33

3
2
+lg(25×4)+2+1

=

3
2
+2+2+1

=

13
2

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