COIN collectors can use a free online calculator to work out how much old change is worth. Pre-decimal coins, such as shillings and sixpences, are no longer made and can’t be spent in stores – but ...

Math historian Glen Van Brummelen came across decimal points in Giovanni Bianchini's manuscript, Tabulae primi mobilis B. Van Brummelen / Historia Mathematica, 2024 For years, historians thought ...

I hadn’t used my scientific calculator in a while, but recently had to use it to work through some calculations for an analog-related story. Yes, I could use a suitable app on my PC or smartphone, but ...

Most numbers used in business are based on 10 – commonly known as the decimal system. One dollar is $1.00 and a half-dollar is $0.50. Time, of course, is an exception because it's based on 12. The day ...

NPR's Scott Simon talks to math historian Glen Van Brummelen about his finding that the decimal point appeared in the 1440s, earlier than thought. How did the decimal point come to be? - the dot that ...

Linux provides commands for converting numbers from one base to another. Learn how to uses these commands and how to make the process easier with scripts and aliases. You might not be challenged very ...