3009 x 101 - 3009
= 3009 x 101 - 3009 - 1
= 3009 x (101 - 1)
= 3009 x 100
= 300900
$3009\times101-3009$
$=3009\times101-3009\times1$
$=3009\times(101-1)$
$=3009\times100$
$=300900$
3009 x 101 - 3009
=3009 x101 - 3009 x 1
=3009 x (101 -1)
=3009 x 100
=300900