Root Words and Inflectional Forms : Vocabulary Building : First Grade English Language Arts Worksheets

Below, you will find a wide range of our printable worksheets in chapter Root Words and Inflectional Forms of section Vocabulary Building. These worksheets are appropriate for First Grade English Language Arts. We have crafted many worksheets covering various aspects of this topic, and many more. We hope you find them very useful and interesting.

A brief description of the worksheets is on each of the worksheet widgets. Click on the images to view, download, or print them. All worksheets are free for individual and non-commercial use.

Please visit Vocabulary Building to browse more worksheets in the same area. View the full list of topics for this grade and subject categorized by common core standards or in a traditional way.

Register and get access to:

  •   All Answer Keys

  •   An Ad-free Experience

  •   Premium/Full Screen PDFs

  •   Unlimited Access


Root Words and Inflectional Forms

Worksheet: First Grade

Inflectional Endings


Read each action word. Create new words by adding the different endings to the base words.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

Root Words and Inflectional Endings


Learn & practice identifying common root words and inflectional endings.

Category:  Vocabulary Building     Root Words and Inflectional Forms



Cut, sort, and glue the word cards by their inflectional ending.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

-Ing Ending


Follow the rules to change the root words by add -ing to the root words.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

-Ed Ending


Follow the spelling rules and add -ed to the root words.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

Adding Inflectional Endings


Add the inflectional ending to each root word. Be sure to look at the pattern and spelling of the root word to determine what changes might be needed.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

Inflectional Ending - “ed”


Learn and practice three ways to pronounce the final -ed in a word.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

Magic Time!


Add “-ed” or “-ing” to the base words. Write each new word on the lines provided.

Category:  Vocabulary Building     Root Words and Inflectional Forms


Worksheet: First Grade

Rainbow Colors


Add “-ed” , “-ing”, or “-s/-es” to the base words. Write each new word on the lines provided.

Category:  Vocabulary Building     Root Words and Inflectional Forms



Again, please feel free to visit Vocabulary Building to browse similar worksheets that may interest you.