What comes after a kilometer?

Answer 1

A kilometer is one thousand TIMES a meter (1 meter X 103) and a megameter is one million TIMES a meter (1 meter X 106), while a millimeter is one thousANDTH of a meter (1 meter X 10-3) and a micrometer is one millionTH of a meter (1 meter X 10-6).

The prefix (e.g. kilo) attached to the unit (e.g. meter) defines the multiplier, as in kilo means "1000 times" andmega means "million times," while milli means "1/1000 of" and micromeans " one millionth of." So, for example,kilometer can broken down into kilo and meter, suggesting 1000 times a meter, which is equal to 1000 meters.

The prefix either breaks a unit (in this case meters) into parts of the unit or multiplies of the unit, depending on the SIGN (+ or -) of the exponent attached to the prefix (negative exponents refer to fractions of the unit [smaller] while positive exponents refer to multiples of the unit [bigger]).