

A small trick is to measure your own hand. How big is your fingers spread all the way? That will always be a good quick measure. Like this: 🤙and 🤘.
And for the hierarchy:
Kilo means 1000 of something
Centi means 1/100.
Mili means 1/1000.
kilo + meter = 1000 meter.
centi + liter = is a cube of water that measures 1 cm all around, that actually 1/100 of a liter. And 1/100 of a kilograms if it is water.
Edit: 1cm cube is a mililiter, because 10x10x10 its 3dimensional as Moody pointed out.
Thanks for correcting me. Messed that up. Have an excuse but don’t worth mentioning it :D