A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = ( )(3) C = ( )(4) D = ( )

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ABCD×9___________________DCBA(1)A=()(2)B=()(3)C=()(4)D=()ABCD×9___________________DCBA(1)A=()(2)B=()

A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = ( )(3) C = ( )(4) D = ( )
A B C D
× 9
___________________
D C B A
(1) A = ( )
(2) B = ( )
(3) C = ( )
(4) D = ( )

A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = ( )(3) C = ( )(4) D = ( )
1089——abcd