Fractional Odds
(Also known as British or Traditional )
Used mostly in international horse racing and in the UK. Becoming less popular.
Tell you if you win your bets.
Should you win, By way of instance, if you gamble # 10 at odds of 3/1, you get profit.
Decimal Odds
(Also known as European)
Common across the world but especially in Europe. Standard on betting exchanges such as Betfair.
If you win, including the return of your bet convey the entire amount you will receive.
As an example, if you bet #10 at chances of 3.75, you will get #37.50 in complete if you win.
Moneyline Odds
(Also known as American)
Used by US bookmakers.
Based on a single bet (on a single result, with no points spread)
The amount quoted is the amount that would win on a $100 wager, In case the moneyline is positive.
The amount quoted is that which you’d have to bet to win $100 When it is negative.
Read more here: http://po-zakony.ru/us-horse-racing-betting-online/