口算
65×

2

5

=            

1

2

÷

3

5

=             

2

9

×3=             

1

2

×

4

5

=             

2

7

+

1

8

=

3

5

×

3

4

=             

9

2

÷4=             

4

7

÷

2

3

=              

1

2

+

1

3

=             

8

5

﹣

2

3

=