No ,that's why it is prohibited under 18 of age .Kids should learn how to value money and not to spend on gambling .iF they put it on gambling or played gambling on under age surely when they age at 18 they are the ones who got addicted to it.
It is true gambling is prohibited under 18 of age and below gambling isn't for kids anyway kids is just playing around with there money and money is so hard to find when you are not going to work for it you will not earn money. ANd spending on gambling while your asking money for your parents isn't good too.
If we didn't really earn the money in a hard way it will really easy to us to waste it, unlike for the money that is came from hard work, it is not easy for us to waste it. So don't give the amount of money to your children that is not accurate to their age.