The document provides a summary of common prefixes referring to amount, number, and negation in English. It lists prefixes with their meanings and sample words containing each prefix. Some key prefixes mentioned are: - Bi and tri meaning two and three respectively - Centi meaning hundred - Micro and milli referring to small and thousand - Mono, multi, and poly relating to one, many, and many - Semi meaning half - Prefixes like a, anti, contra, dis meaning not or against The document concludes by listing prefixes like un, non, pseudo that convey a negative or false meaning. It is intended to help readers understand common English prefixes and their functions in vocabulary.