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.

Enter now
Students and teacher celebrate with a Sumdog trophy

Sumdog's Winter Wonderland

Celebrate the holiday season with a national math contest!

Taking place December 8th - 14th, Sumdog's Winter Wonderland contest is a fun way to help your students rediscover and celebrate their love of math.

Will your class be US champions?

Enter now

Join your next regional contest

Your next state-wide contest will run any time between September 8th and December 1st, depending on your state.

Log in now to check dates and enter your class!

Enter now
Student with a Sumdog trophy

'Even within one contest period I can see growth in my children.'


Deb Milka, Teacher

Mattawan Early Elementary School, MI

How do contests work?

Whether they're learning in school or at home, your students can play alongside their classmates using a smartphone, tablet or computer.
Sumdog checkmark icon 100 x 100

Easy to try

You can try out Sumdog and enter your next local contest by requesting a trial for your school.
Sumdog balancing scales icon 100 x 100

Fair & adaptive

Questions are personalized and scores are based on accuracy, so everyone competes at their own level – and any class can win.
Sumdog celebration icon 100 x 100

Fun and engaging

Students simply answer math questions while playing Sumdog's super fun online activities - they can even do it as homework!
Sumdog prize icon 100 x 100

Prizes to be won

Students can win participation prizes, Sumdog coins, and certificates of achievement! Learn more about contest prizes.

New to Sumdog?

Request a trial, then enter.

Take part in a contest

Already use Sumdog?

Log in and enter your class.

Enter now

Get involved

Download our free Sumdog resources to celebrate student achievements and encourage school-wide participation!
Card image of Sumdog US contest poster 700 x 513

Sumdog Contest Poster

Print this poster and put it on your noticeboard to encourage students and colleagues to join in the fun!


Download (PDF 184KB)
Card image of Sumdog editable certificate 600 x 400

Achievement Certificate

Want to reward your students for their hard work during the contest? Download and personalize these printable certificates.


Download (PDF 112KB)

'I have used Sumdog for many years and have found it a great way to engage my students in math skills using contests, games and ranking. The students especially like the local and nationwide contests to find out how they placed! I highly recommend it.'

John Lukens, Teacher

Johnson Elementary School, VT