3rd grade expanding sentences worksheets
Third grade expanding sentences worksheets use richer pieces and longer results. Your child builds each sentence, keeping the pieces in an order that reads naturally, and the answer key shows the model sentence for a quick check.
Free printable PDF worksheet, aligned to Common Core L.2.1.f.
A new sheet every click.
The kind of sentences you'll fix
Make each sentence grow: add the words in parentheses. Write the new sentence on the line.
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A woodpecker drummed. (busily) (on the old oak)
Fixed: A woodpecker drummed busily on the old oak.
- Sam watered. (the class plant) (every morning)
- Tom stirred. (the hot cocoa) (with a candy cane)
Every print pulls a fresh set of sentences at this level, so a make-up test or a second sibling never gets the same sheet.
What's on each sheet
- Fix it. Make each sentence grow: add the words in parentheses. Write the new sentence on the line. 8 sentences to fix per page.
Every version prints on US Letter or A4, with its answer key on the last page.
How to teach this
Push past correct into vivid: after the sheet, take one answer and ask your child to swap the growth piece for one of their own. The worksheet teaches the mechanics; inventing their own details is where the writing habit forms.
Watch for: Kids copy the kernel and forget the new words. Have them touch each parenthesis and check it made it into the sentence before moving on. Kids drop the period when the sentence grows. The end mark moves to the END of the new sentence; nothing gets to trail after it.
Common questions about expanding sentences
- What should a third grade answer look like?
- A single smooth sentence that uses every piece: The rainbow arched over the wet field after the storm. The key shows one model, and equally natural versions earn full credit.
- Where does this lead?
- Straight into paragraph writing. Kids who can grow a sentence on demand stop writing chains of three-word sentences, and their paragraphs start to breathe.
Related worksheets
- 1st grade expanding sentences A step easier, same skill
- 2nd grade expanding sentences A step easier, same skill
- 3rd grade combining sentences Same grade, nearby skill
- 3rd grade complex sentences Same grade, nearby skill
- 3rd grade run-on sentences Same grade, nearby skill
- Expanding sentences, all grades The full progression
- All 3rd grade English worksheets Every skill at this level
- All 3rd grade worksheets Everything at this level
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Aligned to Common Core L.2.1.f. Reviewed by the One more sheet team. Content version 178, updated August 2026.
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