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 ...

The origins of the decimal point, something millions of people use daily, may be much older than we first thought. It was initially considered to have originated in 1593, having been used by German ...

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 ...

Multiplying a decimal by a whole number uses the same method as multiplying two whole numbers. a) There were two digits after the decimal point in the question \((4\) and \(3)\), so you must have two ...

When subtracting decimals remember to keep the decimal points in line with each other. You can add zeros after a decimal point without affecting its value, so \({2}\) is the same as \({2.00}\). David ...