3rd grade combining sentences worksheets

Third grade combining worksheets mix three joins: shared subjects (Sam ran and jumped), shared predicates, and full compound sentences with a comma plus and, but, or so. Your child picks the smoothest correct combination, and the key names the join it used.

Free printable PDF worksheet, aligned to Common Core L.2.1.f.

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The kind of sentences you'll get

Read the two sentences. Circle the letter of the sentence that combines them best.

  1. Grandpa tells jokes. Grandma sings songs. Grandpa tells jokes, Grandma sings songs. · Grandpa tells jokes or Grandma or sings songs. · Grandpa tells jokes, and Grandma sings songs.

    Answer: Grandpa tells jokes, and Grandma sings songs.

  2. We picked apples. We made a pie. We picked apples, we made a pie. · We picked apples but made a pie. · We picked apples and made a pie.
  3. You can have milk. You can have water. You can have milk or water. · You can have milk, you can have water. · You can have milk but water.

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

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Ask for the relationship before the join: does the second idea add, push back, or follow as a result? That question picks the word (and, but, so) and turns a guessing task into a thinking task. Then read the winning choice aloud to hear the smoothness.

Watch for: Kids glue sentences with just a comma: 'Ben has a kite, Ben has a drum.' That is a comma splice. Joining needs a joining word, or the repeats folded away. Kids pick and for everything. And adds, but pushes back, or offers a choice, so gives a result. Reading the combined sentence aloud with the wrong word usually exposes it.

Common questions about combining sentences

What joins show up at third grade?
Shared subjects, shared predicates, and full compound sentences with a comma plus and, but, or so. The key names the join for every answer, so the why is always on the page.
How should my child check an answer?
Read the combined sentence aloud. It should say every idea from both originals, say nothing twice, and sound like one sentence, not two taped together.

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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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