The Hindu-Arabic number system we use in everyday life was truly revolutionary. Why did it take so long for the West to embrace it?
There’s a joke that goes like this: Roman numerals. What are they good IV?
The Hindu-Arabic system is a place-value system, meaning the position of a numeral indicates its value. So in the number 459, the four represents 400; the five represents 50. Lining the numbers up in columns makes quick work of addition and subtraction. A little carrying and borrowing and you’re solid on multiplication and division as well.
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