Whanganui High School maths teacher, Ravi Prasad, said the school held a Mathex competition the Monday before Friday's competition and from there the two top Year 9 and 10 teams were selected.
Different types of math were covered including algebra, statistics and geometry.
"We had to be strategic whether we passed questions or not because we didn't have much time," Phillips said.
Colaabavala said the group found the practical much easier this year as they were more prepared.
Sinclair said they learned how to delegate the practical task well.
"Other teams were doing the tasks all together but we decided to focus on one task each and then discuss them all together at the end."
The teams were given tape, scissors, and glue for the practical tasks but were not allowed a calculator throughout the competition.
"We had to keep concentrated and keeping our momentum going," Sinclair said.
The team hopes to enter again at a senior level next year.