Most casinos only pay in denominations as small as one dollar. Because of this you can lose fractions of dollars along the way. Why? Say you lay odds of $5 on a Come line bet for the number 9. If you win this bet you'll be paid at 3-2, which is $7.5. But you won't get $7.5; instead you'll get $7. You just lost $0.50 to the casino! Makes sure you pay attention to the payouts so the fractions don't cheat you out of money.
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