What is National Metric Day?

National Metric Day, on October 10th, honors the metric system, its history, and its benefits..

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Decimals are used to measure mass, distance, and volume in the metric system. In his 1586 book De Thiende (The Tenth), a Flemish mathematician, Simon Stevin, first suggested such a device centuries before the metric system became a common measure of measurement.

Following base units are used in the metric system: The following base units are used in the metric system: The following base units are used in the metric system: