That's where I think the Korean numeric system really shines, for some weird reason.
gloss: han(a)=1 du(l)=2 se(t)=3 ne(t)=4 daseot=5 yeoseot=6 ilgop=7 yeodeol=8
handu = one or two
duse = two or three
sene/seoneo = three or four
duseoneo = two or three or four
nedet = four or five
daeyeoseot = five or six
yeoseoilgop = six or seven
ilgoyeodeol = seven or eight
Sadly I think that's about it, it doesn't extend much more. But it's quite useful where it's available!