Prefixes are attached to the beginning of words to modify their meaning. Prefixes indicate size, quantity, position or location and can mean things like excessive or increased (hyper-), deficient or decreased (hypo-), two (bi-), around or surrounding (peri-), or many (poly-).

1. Prefixes
Prefix
•Prefixes are attached to the beginning of words.
•Modifies the meaning of the word or word root.
•Indicates size, quantity, position of, and location.
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2. Apply Your Knowledge
Using prefixes, match the meanings.
Meaning Term
•Excessive or increased Hyper-
•Deficient or decreased
Hypo-
•Two
Bi-
•Around or surrounding
•Many Peri-
Poly-
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