Answer:
Step-by-step explanation:
Prefixes attached to standard units are use to denote the base meaning of the units and it is use to signify multiples of the base or original units or fractions of the base units. That it's measure the multiples or fractions.
For example kilo in kilometer is use to measure the multiples of a 1000 unit meter.
Prefix Is a word or letter placed before a root word