10 years
decade
really small measurement
centimeter
25 cents
quarter
four person band
quartet
animal with four legs
quadruped
five people
quintet
five siblings
quintuple
8 sided shape
octagon
half a century
bicentennial
4 siblings
quadruplets
group of eight
octet
100 years
century
100 year celebration
centennial
separates whole from partial numbers
decimal
a unit of temperature
centigrade
shape with four angles
quadrangle
not typical
quintessence
tone
octave
event with 10 parts
decathlon
destroy
decimate
amount of a whole
percentage