Number enthusiasts may be looking to the new year with a touch of melancholy. Another perfect square like 2025 (45 2 = 2,025) ...

Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. After all of the fun we’ve had recounting the tales of Knot Dude, ...

Struggling with mental math? Students from class 6 to 10 now have a clever way to simplify tricky multiplication problems. The “doubling square” method turns large or complex calculations into quick, ...