Welcome to Sumdog’s maths contests!

Sumdog’s free online maths contests are a fun way to motivate your students as they compete against other classes and schools, locally or nationally.

Scores are based on accuracy, and questions adapt to each student’s level – so everyone has a fair chance.

New to Sumdog?

Sign up free, then enter a contest.

Already set up?

Log in and choose a contest.

How it works

To take part in a Sumdog contest, your students simply play Sumdog’s online maths games, any time during the contest week. You can even set them as homework!

Free to join

Sign up free and enter your class – it’ll only take a couple of minutes.

Adaptive – and fair

Sumdog’s questions adapt to each individual, giving every student a fair chance.

Based on accuracy

The score for your class is based on correct answers, so each student’s accuracy counts!

Keep using Sumdog

After the contest, your students can keep using Sumdog’s free maths games – without any time limit!

"A healthy competition for students who learn maths fluency - that's super fun to do!"

Carl Ruffer, Weston School, NJ

New to Sumdog?

Sign up free, then enter a contest.

Already set up?

Log in and choose a contest.