WARNING - very bad jokes follow ...
1 million microphones = 1 phone
1 million phones = 1 megaphone
2000 mockingbirds = two kilomockingbirds
10 cards = 1 decacards
1 millionth of a fish = 1 microfiche
453.6 graham crackers = 1 pound cake
1 trillion pins = 1 terrapin
10 rations = 1 decoration
100 rations = 1 C-ration
10 millipedes = 1 centipede
3 1/3 tridents = 1 decadent
2 monograms = 1 diagram
8 nickels = 2 paradigms
2 wharves = 1 paradox
but wait, there's more ...
exa-ray exa-rated peta-cat tera-dactyl
giga-low tera-bull pico-nose deci-mate tera-piece-of-paper
peta-greed tara-rism pico-peach deca-cards atto-mobile
micro-phone nano-pudding milli-mouse milli-cent pico-card
peta-gogue peta-ful pico-nick ba-nano pico-low centi-mental
exa-lint atto-miser milli-tent pico-boo atto-whack tera-pin
kilo-bug deca-ration centi-fold tera-torialism
source: www.chemtutor.com