All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
You are not permitted at your age to play with boys because a girl at your age even if she did not start menstruating, she is nearly at the age of puberty and men desire her. The scholars stated that when a girl reaches the age of nine or ten years old, she should be treated like a woman, in regard to the prohibition of looking at her and touching her.
Therefore, dear sister, you should fear Allaah and avoid playing with boys as it is dangerous. The fact that they make you laugh is not an excuse to mix and play with them. Furthermore, you should observe wearing Hijab and stay at home as much as possible because you are a Muslim young woman who is expected (in the future) to cultivate a pious generation who would raise the banner of Islam and spread it among the whole world.
For more benefit, please refer to Fataawa 85641 and 88465.
Allaah Knows best.