（1）(

2

3

)-2+(1-

2

)0-(3

3

8

)

2

3

=

1

( 2 3 )2

+1-(

27

8

)

2

3

=

9

4

+1-[(

3

2

)3]

2

3

=

13

4

-(

3

2

)2=1

（2）log2.56.25+lg0.01+ln

e

═log_2.52.5²+lg10^-2+lne

1

2

=2-2+

1

2

=

1

2