Calculating dice odds is a simple math. You have two dice and a limited number of combinations.
- For 11 totals (2-12), you have 36 possible combinations.
- In order to get 2, for example, you have to get 1 on both dice.
- An odd for getting one is 1:6, so the odds for getting to are 1:36 (1:35).
So, as you can see, the odds for getting particular total are depending on the number of ways we can get that total with two dice.
Here is the table that shows the possible combinations:
As you can see, it isn't hard to calculate dice odds. Just divide number of possible combinations (36) with the number of combinations possible for some particular total.
Another thing - the difference between the actual payout and the ratio given in the table is the actual casino profit. It has to be this way; other ways casinos wouldn't exist at all.
That's why you should check out pay tables.
There are different strategies for playing craps, but the most important advice is to bet at lower house edge. This way you will assure your place at the table for a longer time, and gain some profit out of it.
If you are a risk taker and have no patience to sit and earn little by little, you can always try to take your chances.