Respuesta :
you could multiply
6 times 100
then 6 times 90 or 6 times 9 then add zero
and finally 6 times 8
then add them all together
i don't think its what you want but this is what i would do. mentally
6 times 100
then 6 times 90 or 6 times 9 then add zero
and finally 6 times 8
then add them all together
i don't think its what you want but this is what i would do. mentally
