Proto-Indo-European Roots

Root/Stem: *k'm.tom
Meaning:  hundred
Hellenic Greek he-katon 'hundred'
Italic Latin centum 'hundred'
Celtic Common Celtic *[email protected] 'hundred' > 
Gaulish cantam, Welsh cant 'hundred', Old Irish cét, Cornish cans, Breton kant, Irish céad, Scottish ceud 'hundred'
Indic Sanskrit çatam 'hundred'
Iranian Avestan [email protected] 'hundred'
Tocharian Tocharian A ka"nt, B kante 'hundred'
Balkan Albanian një-qind 'hundred'
Germanic Common Germanic *humdan 'hundred' > 
Gothic hund, Old Norse hundrað, Old English hundred
Baltic Lithuanian šimtas 'hundred', Sudovian simtan
Slavic Common Slavic *süto 'hundred' > 
Russian & Polish & Czech & Slovene & Bulgarian & Sorbian sto
Notes: Linguists suggested that originally the root was *dkm.tom as a derivative from *dekm.t 'ten'. Due to the stress peculiarities the initial consonant was dropped. 
This very stem has been widely used as the main evidence of the division of all Indo-European languages into 'centum' and 'satem' languages, for their different reflections of the Indo-European palatals.