Minimum and Maximum bets are posted on a placard at a roulette table.
Also the minimum value of a chip will be displayed. That may be 25 cent, 50 cent, $1 or more. The
maximum bet straight up on one number and the minimum wager on the outside
and inside bets will be shown.
Minimum bets work differently for inside and outside bets.
For outside bets, any bet you make must be at least the table minimum
per bet.
Inside
bets can usually be as small as the minimum chip value, as long as the total of all
your inside bets is at least the table minimum.