Prefixes and Suffixes Root Words Worksheet

Understanding how prefixes and suffixes change the meaning of a root word is one of the most useful third grade reading and vocabulary skills a young learner can build. This Prefixes and Suffixes Root Words Worksheet helps students break longer words into parts, spot the prefix or suffix, and uncover the root word hiding inside, so they can figure out the meaning of brand-new words on their own instead of guessing.

This printable prefixes and suffixes worksheet gives students two ways to practice. In Part A, children read each word, underline the prefix or suffix, and write the root word on the line. In Part B, they add a given prefix or suffix to a root word and write the new word they build. Use it as classroom morning work, a literacy center, homework, or a quick review before a vocabulary quiz.

What’s Included

• 1 print-ready PDF worksheet
• Answer key
• 10 prefix, suffix, and root word activities

This prefixes and suffixes root words worksheet helps children in three important ways. First, breaking words into parts builds decoding skills that make long words far less intimidating to read. Second, learning common affixes like re-, un-, pre-, -ful, -less, and -er gives kids the tools to unlock the meaning of unfamiliar words they meet in books. Third, the built-in answer key lets students check their own work and lets teachers grade in seconds, turning practice into instant feedback.

To extend the learning, challenge your child to hunt for prefixes and suffixes in a favorite book, or play a word-building game where you combine root-word cards and affix cards to make new words. Keep an affix chart on the wall and add new prefixes and suffixes as you discover them together, so word study becomes a fun everyday habit that grows their vocabulary all year long.

Related Resources

• Prefixes Worksheets & Activities
• Prefixes and Suffixes Sorting Activity
• Third Grade English Worksheets
• Adjective Song (Have Fun Teaching)