mono, uni
two
five
one hundred
one
bi, di
ten
four
one
two
tri EX: triangle, triad, tricycle, trio
three
angle
number
two
quadr, quad, tetra, quar
five
four
side
three
penta, quin
three
thousand
four
five
hexa EX: hexagon, hexapod, hexameter
six
ten
billionth
five
sept EX: September, septangular, septillion
three
one hundred
two
seven
octa EX: octagon, octopus, October
eight
six
seven
one
dec EX: decade, decagon, December
thousandth
five
four
ten
demi, semi, hemi
number
sided-object
side
half
cent EX: century, centurion, cent, centimeter
one hundred
thousand
thousandth
ten
kilo EX: kilometer, kilogram
around
thousandth
thousand
billionth
milli EX: millimeter, milligram, millipede
billionth
one hundred
thousandth
thousand
nano EX: nanosecond, nanotechnology
billionth
thousand
trillionth
one hundred
pico EX: picogram, picometer
trillionth
billionth
one
thousandth
numer EX: numeral, numerator
number
one
two
around
