Answer: Causado
Hope i helped
I'm going to continue off the number you left off(which is "cuarenta cinco"), Cincuenta, Cincuenta y cinco, Sesenta, Sesenta y cinco, Ochenta, Ochenta y cinco, Noventa, Noventa y cinco, Ciento y Cinco.
Preterite: completed action, beginning/end to a past action, narrate past events
Imperfecto: ongoing action, habitual past actions, mental/physical/emotional state
The answer is este. Hope this helps.