Follow the clues to find the mystery number....

Try out some calculations. Are you surprised by the results?...

The value of the circle changes in each of the following problems. Can you discover its value in each problem?...

This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?...

I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?...

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?...

Both arithmetic aficionados and the mathematically challenged will be equally captivated by new research that upends hundreds of years of popular belief about prime numbers....

Chinese ice-ray lattice, or "binglie" as it is called in Chinese, is an intricate pattern that looks like cracked ice and is a common decorative element used in traditional Chinese window designs....

For Michel Talagrand, who won the Abel mathematics prize on Wednesday, math provided a fun life free from all constraints—and an escape from the eye problems he suffered as a child....

Tiny particles like pollen grains move constantly, pushed and pulled by environmental forces. To study this motion, physicists use a "random walk" model—a system in which every step is determined by a random process. Random walks are useful for studying everything from tiny physics to diffusion to...