They solved math problems, but they learned far more than just addition and subtraction.

Fifty-two children at Whitwell Elementary learned that they, too, can make a difference. The children this year raised $3,439.43 for cancer research at St. Jude's Children's Research Hospital.

"We don't keep any of the money, it all goes to St. Jude's," Principal Annette Massie said. "I think it's wonderful they want to participate and do something to help other children. They know this money is going to help someone else."

The school has participated in the annual St. Jude's Mathathon for the last several years. Children ask friends and family members to sponsor them. The sponsors pledge money for each math problem worked.

Each student who took part got a certificate. Kids who raised more than $35 got a T-shirt and a coupon toward entry into Six Flags Kentucky Kingdom. Those who raised more than $75 also got a bookbag. First-grader Malea Harris raised $430, the most money of any child in the school. In addition to the other prizes, Harris got a jambox.