Tukuk-OS📊 Numbers in Daily Life
Five micro-lessons · about 35 minutes in total
Percentages, averages, interest, odds and inflation — the maths bills use. Five lessons, about 35 minutes in total — read one at a time; each stands alone.
The five lessons
1. Percentages Without Pain
Move one decimal, halve it, add: the mental tricks sales and bills rely on.
2. Averages and When They Lie
Mean, median, and why “average salary” is the most misleading sentence online.
3. Compound Interest: The Snowball
Earning on your earnings — the Rule of 72 and why time beats amount.
4. Probability, Odds and the Gambler’s Trap
Coins have no memory, rare things happen to someone constantly, and 23 strangers likely share a birthday.
5. Inflation: The Quiet Tax
Why the same note buys less every year, and how to out-think the number.
Try it live
Further reading
Three real books on this track, from the Open Library catalogue — follow the links for libraries, previews and borrow options.
The research
The most-cited Crossref-indexed papers matching the topic — a window into how professionals actually study it.
- Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries — Sung (2021), cited 81,707 times
- Density Estimation for Statistics and Data Analysis — Silverman (2018), cited 57,570 times
- Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries — Bray (2018), cited 54,628 times