0.54+1

4

5

=2.34；                  6.45-（

5

8

-0.45）=6.275；              

6

5

×

7

12

=

7

10

；      

8×0.25÷

1

4

=8；                      8-0.75÷

3

4

=7；                        125×

6

25

=30；

 1÷

1

2

-1×

1

2

=1

1

2

；                    

11

8

÷

1

10

=

55

4

；                       （

1

20

-0.05）÷

1

4

=0．

故答案为：2.34，6.275，

7

10

，8，7，30，1

1

2

，

55

4

，0．