A*B=260,A*2B=( ),3A*B=( ),A*(B/2)=( ),(A/4)*(B*4)=( )
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![A*B=260,A*2B=( ),3A*B=( ),A*(B/2)=( ),(A/4)*(B*4)=( )](/uploads/image/z/1639300-4-0.jpg?t=A%2AB%3D260%2CA%2A2B%3D%28+%29%2C3A%2AB%3D%28+%29%2CA%2A%28B%2F2%29%3D%28+%29%2C%28A%2F4%29%2A%28B%2A4%29%3D%28+%29)
A*B=260,A*2B=( ),3A*B=( ),A*(B/2)=( ),(A/4)*(B*4)=( )
A*B=260,A*2B=( ),3A*B=( ),A*(B/2)=( ),(A/4)*(B*4)=( )
A*B=260,A*2B=( ),3A*B=( ),A*(B/2)=( ),(A/4)*(B*4)=( )
A*B=260,A*2B=(520 ),3A*B=( 780),A*(B/2)=( 130),(A/4)*(B*4)=(260 )