Mathematics is not a spectator sport! The benefit of the Competition for participants is greatly enhanced by training and preparation. Schools which take some trouble in selecting their teams, and encourage participants to work through competition papers from previous years, always achieve better results in the Competition. A variety of training material is available:
The UCT Mathematics Competition Yearbook
Every year the UCT Mathematics Competition Yearbook contains all the question papers of that year, with full solutions, statistics and prizewinners.
Past UCT Mathematics Competition papers
Papers from previous competitions are available online:
A Mathlete's Training Guide
A Mathlete's Training Guide is an introduction to problem solving skills for mathematics competitions. The author, David Jacobs, was a three-time Gold Award winner in the UCT Mathematics Competition.
The Guide contains eight chapters on topics which are staples in maths competitions, including ratios and means, rates and time, number theory and probability. The 75-page booklet contains more that 120 problems, with hints and full solutions.
Mathematical Digest, a quarterly publication for high schools, was published from 1971 to 2014. Every issue contained a wide variety of topics, including maths olympiad and competition problems from all over the world.
Over 50 back numbers are still available.