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 ...

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 ...

So, the number \(5.743\) is said to have 3 decimal places. The number \(5.1492\) has four decimal places, while \(4.34\) has two decimal places. To round a number to a given number of decimal places, ...

The humble decimal point may have been invented about 150 years before we previously thought. Experts had previously credited German mathematician Christopher Clavius for the innovation, but according ...

Decimal points are at least 150 years older than historians thought, according to newly unearthed notes from Venetian merchant Giovanni Bianchini, who practiced astrology in the 1440s. When you ...

When we use decimals you can think of one whole divided into ten parts, they’re tenths. Or if you divide into one hundred parts, these are hundredths. So, how do we write them? Say hello to the ...

On Pi Day (March 14), NASA reminded us why we need only a small slice of the irrational number's infinite decimal places to explain most of the known universe. When you purchase through links on our ...