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.
'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.

Easy to try
You can try out Sumdog and enter your next local contest by requesting a trial for your school.

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

Fun and engaging
Students simply answer math questions while playing Sumdog's super fun online activities - they can even do it as homework!

Prizes to be won
Students can win participation prizes, Sumdog coins, and certificates of achievement! Learn more about contest prizes.
Get involved
Download our free Sumdog resources to celebrate student achievements and encourage school-wide participation!
'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