Numerical Prefixes

http://phrontistery.info/numbers.html
Greek prefixes:

mono-
di-
tri-
tetra-
penta-
hex-
hept-
oct-
ennea-
dec- deca-

Latin prefixes

uni-
bi- duo-
tri-
quadri- quart-
quinque- quint-
sex-
sept-
oct-
nonus- novem-
dec- deca-