What role do prefixes play in the metric system?

Consoles allow you to conveniently handle large numbers. Each prefix indicates multiplication of the value to 10 at some extent.

The most popular: 10^9 giga-

10^6 mega-

10^3 kilo-

10^2 gecto-

10^ (-1) = 0,1 deci-

0,01 centi-

0,001 milli-