Im 12 years old and weigh 110 pounds have fat legs and sortof a belly how do you get rid of it?

Try biking or walking 3-4 times a week. You can't spot train, which means your can't do an exercise that will remove fat from one spot on your body. Crunches and such only make your stomach bigger by adding muscle underneath the fat. Your best bet would be to try eating 4-5 smaller meals a day. But your still young you shouldn't have to worry much.

There is also very good exercises that you can do, pilates and obliques are very good and challenging exercises that help you lose weight, tone your body, and build muscles