For masculine nouns - Сломан (slo-man)
For feminine nouns - Сломана (slo-man-a)
For neuter nouns - Сломано (slo-man-a)
For plural nouns - Сломаны (slo-man-i)
Use this to say "something is broken".
To say "the broken something" use the adjective.
Masculine - Сломанный (slo-man-i)
Feminine - Сломанная (slo-man-a-ya)
Neuter - Сломанное ( slo-man-o-ye)
Plural - Сломанные (slo-man-i-ye)