Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you repeatedly halve one number and double the other. After crossing out rows with ...

Converting between fractions, decimals and percentages is a useful problem-solving skill. The data can be more easily ordered by size when written in the same format. Calculations often give a decimal ...

These days, large language models can handle increasingly complex tasks, writing complex code and engaging in sophisticated ...

When I was in middle school, I had a classmate who would look at trigonometric functions and yell, "I will never need these!" ...

Duah: Using puzzles, both at home and in classrooms, can restore the often-forgotten truth that learning happens in ...

Managing your inbox is a never-ending task, which is why we should seek to simplify it as much as possible. When emails pile up, you start overthinking what you need to do—I know I do, anyway. But if ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Charlene Rhinehart is a CPA , CFE, chair of ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor tax expert. She ...

Many years ago, I saw a tweet go around that said something like, "You have the same amount of hours in a day as Beyoncé." On the one hand, that was annoying, because while it’s true, I don’t have the ...

Editor’s note: “Behind the News” is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT. Dewey ...

When students in Catherine Hartmann’s honors seminar at the University of Wyoming took their final exams this month, they encountered a testing method as old as the ancient philosophers whose ideas ...