* × = × = = .
* + = + = .
* = = 5 × 0.01 m = 0.05 m.
* = 9 × (10³ m)² = 9 × (10³)² × m² = = 9 × {{val}} = .
* 3 MW = = 3 × = .

Application to units of measurement

The use of prefixes can be traced back to the introduction of the metric system in the 1790s, long before the 1960 introduction of the SI. The prefixes, including those introduced after 1960, are used

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