In order to play blackjack, you need to have some money to bet with. The amount of money you need will depend on the type of blackjack game you are playing and the betting limits that are in place.
For example, if you are playing a game of blackjack with a $5 minimum bet, you will need at least $5 to play. If the maximum bet is $100, then you will need at least $100 to play.
However, it is important to note that the amount of money you need to play blackjack can vary depending on your betting strategy. If you are a conservative player who only bets the minimum, you will not need as much money as someone who is a aggressive player who likes to bet the maximum.
In general, though, it is always good to have more money than you need so that you can stay in the game longer and have more fun. After all, blackjack is a game of chance and the more money you have to bet, the better your chances of winning.