Pass Line Odds
During the Intermediate Roll you can add and extra bet called Odds directly behind your Pass Line bet. They are paid True Odds and are also betting that the Point will be rolled before the 7. The wonderful thing about the Odds bet is THE CASINO HAS ZERO ADVANTAGE so you should always want to make this bet.

Odds are not contract bets

You can only make the Odds bet during the Comeout Roll

if you don't plan on adding Odds then you probably shouldn't bet the Pass Line
How to Bet Pass Line Odds
Odds for the Pass Line are put directly behind the Pass Line bet. You should leave an inch or two between the two bets but at the very least you need to leave enough room for one die to land between each bet.
What do Pass Line Odds Pay
Odds for the Pass Line pay differently depending on what the Point is. They pay what are called True Odds. True Odds are different for each Point which is why you must bet Odds differently for each of those Points.
Pays 6:5 on the 6 and 8
When you add Odds to a Pass Line Bet on the 6 or 8, you must bet in increments of five. $5, $10, $15, etc. Every $5 you bet as Odds for a Pass Line bet on the 6 or 8 gets paid $6. Otherwise known as 6:5 which is read “6 to 5” or you can think of it as "$6 for every $5".
Example 1
Example 2
Pays 3:2 on the 5 and 9
You must have even Odds on the 5 and 9. This means anything that’s an even number such as $2, $4, $10, $30, etc., could be used. Every $2 you bet as Odds gets paid $3. This is known as 3:2 which is read “3 to 2” or "$3 for every $2". You could also think of this as 1 and ½ times your bet or a Blackjack.
Example 1
Example 2
Pays 2:1 on the 4 and 10
Odds on the 4 and 10 can be any amount. Regardless of what you bet, the amount you will win be double or 2:1 which is read “2 to 1” or you can think of it as "$2 for every $1". $3 Odds will win $6. $20 odds will win $40.
Example 1
Example 2
Betting the Pass Line w/Odds for the Dealers
If you make a Pass Line bet for the dealers you can also add Odds to it. Just like a players Pass Line bet, there is also a maximum amount of Odds you can add to a dealers Pass Line bet that is determined by each casino. The Pass Line bet gets paid even money and the Odds accordingly.