4 slot pciAmerican odds, on the other hand, use "+" and "-" to indicate the bet size. Positive odds like +200 mean that you will win 200 units for every 100 units you bet. Negative odds like -150 mean that you need to bet 150 units to win 100 units. These odds are mainly used in the US and some other countries, especially in sports like basketball, football and baseball.
