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Numbers have always existed, and mathematical concepts such as decimals are discovered or developed, rather than invented.

Decimals appear to have been introduced around the 1500s, but not in their current form. Flemish mathematician Simon Stevin is credited with the development of modern decimals. This was seen in a booklet he published in 1585, entitled De Thiende which translates to 'the art of tenths'. Its complete title was Decimal arithmetic: Teaching how to perform all computations whatsoever by whole numbers without fractions, by the four principles of common arithmetic: namely, addition, subtraction, multiplication, and division.

Q: Who invented decimals and when and where?

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Decimals were probably invented when we didn't have any way of showing parts of numbers.

No.

He invented decimals

a European mathematician did it two or three centuries ago. before then they used fractions instead of decimals.

It is thought that decimal numbers were used by the Elamite dynasty (Iran) approx 5000 (+/- 500) years ago.

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Elanites in Persia invented decimals about 6,000 years ago.

Decimals were probably invented when we didn't have any way of showing parts of numbers.

No.

Before decimals were invented, people used fractions.

Joe shmoe

He invented decimals

Decimal notation was invented long after the text of the Bible was set in final form, so the Bible says nothing about decimals.

The Arabs wished to express quantities that were not whole numbers. As to why they used fractions as opposed to decimals for this, that was owing to the fact that they had not invented decimals yet.

a European mathematician did it two or three centuries ago. before then they used fractions instead of decimals.

terminating decimals and repeating decimals

It is thought that decimal numbers were used by the Elamite dynasty (Iran) approx 5000 (+/- 500) years ago.

Two of them are terminating decimals and recurring decimals