Welcome to Sumdog's online math contests!

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

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.

How do the contests work?

Your students play alongside their classmates to compete against other classes and schools, locally or nationally.

They can join in on a smartphone, tablet or computer, in school or at home. Because our math contests are online, they are motivating for students, who enjoy the format.

Free to enter

It only takes a couple of minutes to sign up and you can continue using Sumdog for free even when the contest has ended!

Fair and adaptive

Sumdog’s questions are based on accuracy and are tailored to each student’s level – so everyone has a fair chance of winning.

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

You can win prizes, as well as Certificates of Achievement for your students (scroll down to bottom of page).


Ready to enter a contest?

New to Sumdog:

Sign up for free, then enter.

Already got an account:

Log in and enter your class.

US contests

Our next national contest takes place April 8th-14th, 2022! Enter now.

You can find a list of our regional contests below.

Enter Now

Printable Resources

Certificate of Achievement

Editable Poster

US contest poster - screenshot


We’re here to help! Can’t find the answer you’re looking for?

Check out our Contests Support Center or get in touch with our Support team.

What grades can take part?

How will the contest know what questions to ask my students?

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

How do students take part in the contest?

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

How long are the contests?

How are the scores calculated?

Where can I view my class scores?

When are scores final?

Are there any prizes?

“After the first day of using the program, I knew it was an instant hit. The next day my students were eagerly asking, well, begging really, to use the program again.”
Sherri Oliver, Teacher, Mount Vernon Community School, VA, USA