Numer-
Number
Arithm-
Number
Bi-
Two, twice, double
Tri-
Three
QuadR-
Four
Quint-
Five
Quart-
Four
Quinqu-
Five
Sex
Six
Sept-
Seven
Oct(o)-
Eight
Dec(em)-
Ten
Nov(em), nona-
Nine
Cent-
One hundred
Du(o)-
Two
Tetr-
Four
Pent-
Five
Hex-
Six
Hept-
Seven
Oct-
Eight
Ennea-
Nine
Dodec-
Twelve
Icos-
Twenty
Hecat-
Hundred