How to play 100 High:: Step 1. Place your bet (Give the slips you bet to the dealer.):: Step 2. Roll a 1000 sided die.:: Step 3. Look at your score. :: – Score lower than 700, You lose.:: – Score between 700 and 900, You win.:: – Score equal to 900 or above, You win double your bet.:: Step 4. Collect your winnings! (Not guaranteed to win every round.)