Try this ancient multiplication trick—halves and doubles, also called Egyptian or Russian math—where you repeatedly halve one ...

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, ...

New research reveals why even state-of-the-art large language models stumble on seemingly easy tasks—and what it takes to fix ...