Run-On Sentences and Sentence Fragments Worksheets

Students sort nine examples into sentences, fragments and run-ons. On page two they add words to fix three fragments and rewrite three run-ons.

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Run-On Sentences and Fragments

Name: ______________________Date: __________

A sentence has a subject and a verb and tells a complete thought. A fragment is missing part of the thought. A run-on joins two sentences with no punctuation. Circle what each one is.

  1. Our class planted beans in cups.
    sentencefragmentrun-on
  2. We saw a rainbow over the lake.
    sentencefragmentrun-on
  3. My best friend Lola.
    sentencefragmentrun-on
  4. The movie was long I fell asleep.
    sentencefragmentrun-on
  5. Ran down the hall.
    sentencefragmentrun-on
  6. The wind blew the hat off my head.
    sentencefragmentrun-on
  7. The big red truck.
    sentencefragmentrun-on
  8. Nina fed the fish then she cleaned the tank.
    sentencefragmentrun-on
  9. The bus was late we missed the start of school.
    sentencefragmentrun-on

Fix Run-Ons and Fragments

Name: ______________________Date: __________

Each one is a fragment. Add words to make a complete sentence.

  1. After the game ended.
  2. Because it was raining.
  3. When the bell rang.

Each one is a run-on. Rewrite it as two sentences, or join the sentences with a comma and and, but or so.

  1. It was cold I wore my coat.
  2. I like pizza my brother likes tacos.
  3. Max lost his tooth he put it under his pillow.

Run-On Sentences and Fragments: Answer Key

A sentence has a subject and a verb and tells a complete thought. A fragment is missing part of the thought. A run-on joins two sentences with no punctuation. Circle what each one is.

  1. Our class planted beans in cups.
    sentencefragmentrun-on
  2. We saw a rainbow over the lake.
    sentencefragmentrun-on
  3. My best friend Lola.
    sentencefragmentrun-on
  4. The movie was long I fell asleep.
    sentencefragmentrun-on
  5. Ran down the hall.
    sentencefragmentrun-on
  6. The wind blew the hat off my head.
    sentencefragmentrun-on
  7. The big red truck.
    sentencefragmentrun-on
  8. Nina fed the fish then she cleaned the tank.
    sentencefragmentrun-on
  9. The bus was late we missed the start of school.
    sentencefragmentrun-on

Fix Run-Ons and Fragments: Answer Key

Each one is a fragment. Add words to make a complete sentence.

  1. After the game ended.
    Answers will vary. Example: We cheered after the game ended.
  2. Because it was raining.
    Answers will vary. Example: We stayed inside because it was raining.
  3. When the bell rang.
    Answers will vary. Example: We lined up when the bell rang.

Each one is a run-on. Rewrite it as two sentences, or join the sentences with a comma and and, but or so.

  1. It was cold I wore my coat.
    Answers will vary. Example: It was cold, so I wore my coat.
  2. I like pizza my brother likes tacos.
    Answers will vary. Example: I like pizza. My brother likes tacos.
  3. Max lost his tooth he put it under his pillow.
    Answers will vary. Example: Max lost his tooth. He put it under his pillow.

Teaching tips

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Run-On Sentences and Sentence Fragments Worksheets: free printable grammar & punctuation worksheets for 2nd–4th grade from Printable Classroom. Printable run-on sentences and fragments worksheets: decide whether each one is a complete sentence, a fragment or a run-on, then fix fragments and run-ons. Answer key with example answers.