It's simply a shorthand way of expressing large measurements. It takes less less ink (and less energy) to write or type millimetre - than 'millionth of a metre'.
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Mega = 1,000,000 units kilo = 1,000 units centi = 1/100 unit milli = 1/1,000 unit micro= 1/1,000,000 unit nano = 1/1,000,000,000 unit
kilo hecto deka basic unit deci centi milli
The same prefixes as for any other units - kilo for 1000, Mega for a million (mega is not in common use, though), milli for 1/1000, micro for 1/1,000,000, etc.The same prefixes as for any other units - kilo for 1000, Mega for a million (mega is not in common use, though), milli for 1/1000, micro for 1/1,000,000, etc.The same prefixes as for any other units - kilo for 1000, Mega for a million (mega is not in common use, though), milli for 1/1000, micro for 1/1,000,000, etc.The same prefixes as for any other units - kilo for 1000, Mega for a million (mega is not in common use, though), milli for 1/1000, micro for 1/1,000,000, etc.
A milli is a 1/1000 whereas a kilo is a 1000
no. kilo is 1,000 times larger than 1. milli is 1,000 times smaller than one; therefore kilo is a factor of 1,000,000 larger than milli