Learn easy mental maths tricks for percentages, multiplying by 11 and the Rule of 72 to boost everyday confidence.

Every time you pay online, your data is protected by a maths problem nobody has proved is unbreakable. Here is what that means, and why the world is already preparing for the worst.

The Louisville women’s basketball team spent most of Sunday afternoon trying to solve problems that kept multiplying: Virginia’s zone defense, a double-digit deficit, … Read more Roberts injury looms ...

The seasonally adjusted balance on goods decreased $742m in January. Goods credits (exports) decreased $415m (-0.9%) driven by Other rural. Goods debits (imports) increased $328m (0.8%) driven by ...