(1)
=42

×0÷3

,
=0;
(2)
=3

×4

-3

×3

,
=3

×(4

-3

),
=3

×1,
=3

;
(3)
=11

-2

-

,
=

-

,
=4

;
(4)
=

+

×

,
=

+

,
=2

;
(5)
=(3-

)×

=

×

,
=4;
(6)
=8-0.81+6.81,
=7.19+6.81,
=14;
(7)
=(

×21+

×21)÷

,
=(7+3)÷

,
=10

,
=2

;
(8)

=8.1÷[(4

-3.5)÷1

],
=8.1÷[

÷

],
=8.1÷

,
=16.2.
分析:根据题意,(1)、(3)、(4)、(5)、(6)、(8)可利用小数的四则混合运算和分数的四则混合运算进行解答;
(2)、(7)可利用乘法分配律进行解答比较简便.
点评:此题主要考查的是分数、小数的四则混合运算和乘法分配律的应用.