A prefix is a letter or group of letters that is added to the beginning of a word. The two types of prefixes are word prefixes and number prefixes. Prefixes help you expand your vocabulary. Commonly used prefixes include (inter-,extra-,anti-,pre-,semi-,bi-,tri-,ex- etc..) Prefixes are within many words int he English language. It is important to learn as many prefixes as you can for understanding prefixes can greatly expand your vocabulary. Learn more about prefixes by using our free prefixes worksheets below.
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