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McGraw-Hill's Top 50 Skills For A Top Score: ASVAB Reading and Math by Dr. Janet Wall

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Skill 14 Know Root Words

A lot of words in the English language are made up of a base word with either a prefix (Skill 15) or a suffix (Skill 16) added to it. The base word has a meaning, and its meaning is changed in some way by adding a prefix or a suffix.

The words prefix and suffix are really good examples of this. In the word prefix, fix is the base word, and it means “to fasten or attach.” The letter group pre- (which is a prefix) means “before.” So when pre- is attached to the base word fix, the resulting word prefix means “a word part that is attached before [a root word].” The letter group suf- means “below or behind,” so when suf- is attached to the root word fix, the resulting word suffix means “a word part that is attached behind ...

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