1-

2

5

+

4

5

=

7

5

           1÷

3

2

×

2

3

=

4

9

        0.6-

1

6

+0.6=1

1

30

        7.1+

2

5

=

15

2

（

1

4

+

1

6

）×24=10         7÷

3

4

×7×

3

4

=49       9-0.9=8.1          65÷0.05=1300

0÷0.1-0.1×1=9

9

10

       8-0.08=7.92         2÷2%=100          0×（-5）=0