Splits work in roulette in the same way that they work in any other game of chance. When you place a bet on a number, you are essentially betting on the odds of that number being chosen as the winning number. In roulette, the casino will give you a fraction of a bet for each number bet. For example, if you bet $5 on the red number and the roulette wheel lands on that number, your bet would be divided into $2.
50 for the red number and $1 for all other numbers on the wheel. If that same roulette wheel landed on black 22, your $5 would be divided into $2.50 for black 22 and $0.50 for all other numbers on the wheel (because black 22 has a one hundred percent chance of being chosen as the winning number).
If you want to make sure you make money no matter what happens in a given spin of the roulette wheel, it is important to split your bets evenly across all of the numbers on the wheel. This will give you a better chance at hitting all of your numbers, which can increase your chances of winning money.
