Heh quiz right after that, ended up powering through it easily because it's European enough for most of it.
unu → fr:un / es:uno
du → en:two / fr:deux
tri → en:three
[…]
ses → fr:six
sep → fr:sept
ok → es:octo
naǔ → fr:neuf / es:nueve
dek → none but could take it as decimal
cent → fr:cent
mil → fr:mille