You can't avoid having kids playing with money involve, Because even the parents give them money to spend, their young minds tend to think at first they will buy food or toys and when it is not enough they will try to bet their money in playing games just to have more, Of course it is inevitable for them not to try it because there are so many influences you see in the real life and by watching Television.
I didn't give my child a money, if I give him money I will also teach him to buy good things or good food like cupcakes or even for his snack but not to bet his money to gamble. I didn't also give him the amount that is not right to his age.