# Clever maths technique solves problems without exact answers

A mathematician has popularized a strategy that uses approximation and estimation to solve complex problems without computing precise results. The method, known as "Fermi problems" or order-of-magnitude reasoning, helps quickly gauge plausible solutions. This matters because it can speed up problem-solving in science, engineering, and everyday decision-making.

**Importance:** 2/5

## Sources

### Science
- [New Scientist](https://www.newscientist.com/article/2532687-the-sneaky-maths-trick-for-solving-problems-without-answering-them/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home) — Fri, 10 Jul 2026 10:00:57 +0100