4th Grade Prefixes and Suffixes Worksheet
A prefix goes before a root word and a suffix goes after — both change the meaning. Build and define words using common affixes.
- Homework
- Review
- Test Prep
- Centers
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- Grade
- 4th Grade
- Subject
- Reading
- Skill
- Vocabulary
- Topic
- prefixes and suffixes (affixes)
- Difficulty
- Standard
- Time
- 18 minutes
- Pages
- 2 (incl. answer key)
- Format
- Printable PDF (US Letter)
- Answer key
- Included
- Best for
- homework, review, test prep, centers
Worksheet details
What This Worksheet Practices
Students will use common prefixes and suffixes to build words and determine word meaning from affixes.
- Knowing common prefixes (re-, un-, pre-, mis-)
- Knowing common suffixes (-ful, -less, -ly, -ness)
- Using affixes to figure out word meaning
Worksheet Preview
Word parts unlock new words
A prefix attaches to the front of a root word and a suffix to the end — and each one changes the meaning. Learn that un- means “not,” re- means “again,” -ful means “full of,” and -less means “without,” and you can figure out thousands of words you’ve never seen before.
How to use it
Read the root word first, then add the prefix or suffix and talk about how the meaning shifts. Watch for spelling changes (happy → happiness). This affix knowledge powers 4th grade comprehension.
👩🏫 Teacher note
Teach the meaning, not just the spelling: un- = not, re- = again, -ful = full of, -less = without. Knowing affixes lets students unlock unfamiliar words on their own.
🏠 Parent note
Cover the prefix or suffix and read the root word first, then add the part back and talk about how the meaning changes.
Common Mistakes to Watch For
- Ignoring spelling changes (happy -> happiness)
- Mixing up un- (not) with re- (again)
Answer Key
The built word and its meaning are given for each item.
⬇ Download Answer Key (PDF)Related Worksheets
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