What are the basic prefixes used in the metric system and how do hey relate to the size of the base unit?
In the metric systems, unlike other systems, there is only one unit for each measurement; e.g the only unit for length is the metre. For lengths much longer, or much shorter, we use prefixes to indicate the fraction or multiple of the metre.For short lengths the fractions are thousandths, millionths, billionths; for which the prefixes are milli-, micro-, and nano-.For longer lengths, the multiples are thousands, millions, and billions; for which the prefixes are kilo-, mega-, and giga-.The prefixes indicate the fraction,or the multiple of the base unit.