Hundreds of Louisiana elementary students competed for medals and prizes Saturday at the Louisiana Elementary Math Olympiad at Kenilworth Science and Technology Charter School in Baton Rouge.

Jonathan Ding, of Buchanan Elementary School in Baton Rouge, won first place in the contest, which was open to all fourth- and fifth-grade students in Louisiana. Niles Babin, of LSU Lab School in Baton Rouge, was second, Claire Venable, of Zachary Elementary School, was third.

Tevfik Eski, superintendent of Kenilworth, said 446 students from 58 Louisiana public, private, parochial and charter schools registered for the Olympiad, which has been described as an “old school” math contest because students must work out problems using only paper and pencil.