3

4

×16=12                 12÷

3

5

=20             0.3×

5

6

=

1

4

   

3

5

÷

9

10

=

2

3

                 1÷

7

8

=1

1

7

            

5

7

×

2

3

÷

5

7

=

2

3

   

1

2

×

1

3

÷

1

2

×

1

3

=

1

9

          0×

7

12

+

1

8

=

1

8