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Here are a few problems to keep your number sense sharp during the summer months. What is the greatest positive three-digit integer that is divisible by 5, 7 and 9? We know that any three-digit number...

Per the American Pie Council, January 23 is National Pie Day! This is not to be confused with Pi Day, which celebrates mathematical symbol π. National Pie Day is a celebration of a beloved tasty treat...

Today is Pi Day! Below are a few questions to celebrate. If June ate 1/4 of 2/3 of 1/2 of a pie, what fraction of the whole pie did she eat? Express your answer as a common fraction. To determine what...

The lunchroom workers at Guffey Middle School can move a total of 600 students through 5 lunch lines in exactly one hour. How many students move through each lunch line per minute? With 600 students...

Kaleb has a bag containing red, black and white LEGO® bricks. If he has 12 more red bricks than white bricks and 15 fewer white bricks than black bricks, what is the positive difference between the...

The Zappone family has a table that can seat eight people comfortably, which is perfect, since there will be eight people sitting down to Thanksgiving dinner. The rectangular table can seat three...

While there were many problems written and solved for MATHCOUNTS in 2021, below is a selection of some of the best of the year! 2020-2021 School Handbook, #113 A fair coin is flipped 5 times. What is...

In honor of Engineers Week, we’re posting a throwback to a sampling of previous years’ Future Engineers Problems of the Day. Join us next week for all new engineering-themed Problems of the Day for...

In June, MATHCOUNTS joined the Data Science 4 Every­one Commitment Campaign to build capacity for K-12 data science ed­ucation. As part of this commitment, MATHCOUNTS will create and share additional...

Did you know that May 20th is the official birthday of “blue jeans”? It was on May 20, 1873 that Levi Strauss and David Jacobs received patent number 139,121 from the US Patent and Trademark Office...