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Welcome to Sumdog's math contests

Sumdog’s online math contests are a fun way to motivate your students as they compete against other classes and schools.

Over 48,000 classes take part every year, answering over 3.5 billion questions! It’s a great opportunity for students to practice math, have fun and boost their confidence.

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How do Sumdog math contests work?

Whether they're learning in school or at home, your students can play alongside their classmates using a smartphone, tablet or computer.

Fun and engaging

Students simply answer math questions while playing Sumdog's 38 engaging games - they can even do it as homework!

Fair and adaptive

Questions are personalized and scores are based on accuracy, so everyone competes at their own level – and any class can win.

See the impact

Answers given feed into our Fluency Focus report to help you build a picture of strengths and areas needing extra support.

Prizes to be won

There are lots of prizes up for grabs, from participation prizes to Sumdog coins, and certificates of achievement!

Join your next contest

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Wherever you are in the world, watch your class climb to the top of the leaderboard as they answer personalized math questions. Will your students be Sumdog champions?!

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United States of America

Regional contests, Monday 2nd - Friday 6th February

United States of America
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Canada

Regional contests, Monday 2nd - Friday 6th February

Canada
“Sumdog is amazing! All the pupils love playing the interactive games and even more so when they can compete against each other!”

Lynne McLelland, Teacher

Airdrie Academy

FAQs

We're here to help! If you can't find the answer you're looking for, check out our Contests Suport Centre or get in touch with our friendly Support team.

 

How do I take part in a Sumdog contest?

If you're new to Sumdog, you will need to get in touch with our team who can help set your class up to try it through the next upcoming contest.

If you have an existing Sumdog subscription, you can enter by logging into your account and going to the contests page.

What grades can take part?

Sumdog is aimed at children aged 5-14. The questions posed during the contest follow Sumdog's Fluency curriculum, targeting core numeracy practice and consolidation. 

 

How will Sumdog know what to ask my students during the contest?

Prior to the start of the contest, we would recommend that you have your students log in to Sumdog so they can complete their diagnostic test. This places them at their unique ability level.

The questions asked during the Sumdog contest will be based on their diagnostic test score.

Is there a minimum or maximum class size to enter into a contest?

To make our contest fair, there is a minimum of 5 students per class. The maximum class size is 35.

Is there a time limit or set number of questions they have to complete?

We do not have a time limit for our contests. The contests run from Monday to Friday. Students can log in any time during the contest period to answer questions.

We know that not all students have access to devices outside of school so, to make the contest fair, we do have a 700 question limit. This means that once a student has answered 700 questions in the contest, any questions after that will not count towards their contest score.

On the contest task, students will be able to see a 'Questions remaining' box, showing them how many questions they have left.

How long are Sumdog contests?

From January 2026 onwards, we have a new contest format! Following lots of feedback from our teachers, Sumdog math contests now start on Monday at 8am (local time) and end on Friday at 12pm (local time).

During the contest period, students can log in at any time to answer the questions, either in school or at home.

How are the scores calculated?

The individual student scores are calculated based on correct answers. Each correct answer will equal 1 contest point.

Class scores are calculated on a class average. This is done to make it fair for both larger and smaller classes.

Scores on the leaderboards are not final until after the contest ends.

What prizes can we win?
Check out the prizes that are available to win here.
 

 

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