Check Back Soon!

Problems are posted at 8am Central Time each Monday and are taken down at midnight Central Time the following Monday. Please check back at 8am Central Time on Mondays to solve a new problem!

Past problems
Monthly and Annual Rankings

Custom Leaderboards Are Here!

Take the competition to the next level and encourage participation by creating custom leaderboards for your students or friends to join. Click below to try it out now!

Get Started with Custom Leaderboards

Need Scratch Paper?

We encourage you to use Casio's new free online math software, ClassPad.net, as your digital scratch paper while solving the problems on our site!

Use ClassPad for digital scratch paper to solve this problem!