乘法表（一）

6 x ( ) = 12

4 x ( ) = 28

4 x ( ) = 12

8 x 7 = ( )

( ) x 4 = 20

7 x 8 = ( )

9 x 6 = ( )

( ) x 5 = 10

5 x 9 = ( )

( ) x 8 = 40