Practice Fragments and Run-On Sentences
Master complete sentences by practicing how to spot fragments and fix run-ons with interactive quizzes and instant feedback.
Choose your level
Same skill, different difficulty. Start where it feels right — you can switch any time.
Grade level quizzes
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
10 questions · Multiple choice
A complete sentence needs a subject, a predicate, and a complete thought. If it is missing one of these, it is a fragment (like: "Running down the street"). A run-on happens when two complete sentences are joined together without the right punctuation (like: "I love reading books I go to the library"). You can fix run-ons by adding a period, or a comma and a conjunction like 'and' or 'but'!
Practice this skill at another grade level
The same skill with easier or harder sentences.
Printable fragments and run-ons worksheets
Every Fragments and run-ons quiz on this page also downloads as a free printable worksheet with a PDF answer key — great for homework, review, or the classroom. Sign in and use the print button on any quiz, or download a whole Grade 6 grammar workbook at once with Pro.
Read something at this level
Grade 6 reading passages to enjoy alongside grammar practice — each one comes with comprehension questions and a quiz.
Frequently asked questions
What is the difference between a fragment and a run-on sentence?
Is this topic appropriate for sixth graders?
How do interactive quizzes help kids learn grammar?
What are common signs that a student is struggling with run-on sentences?
Why Complete Sentences Matter in Sixth Grade
As students transition to middle school, their writing expectations grow. Sixth graders are asked to write longer essays, research reports, and creative stories. Mastery of sentence structure is crucial for clarity. Recognizing fragments and run-on sentences—originally introduced in fourth grade—is a foundational editing skill that prevents confusing or disorganized writing.
Tips for Helping Your Child or Student
Reviewing sentence structure doesn't have to be tedious. Here are a few ways to reinforce these concepts:
- Read aloud: Have students read their writing aloud to hear where they naturally pause, which often reveals missing punctuation or incomplete thoughts.
- The 'Who and Did What' check: Encourage kids to look at their sentences and identify the subject (who) and the predicate (what they did).
- Identify conjunctions: Practice using coordinating conjunctions (and, but, or, so) to join thoughts correctly.
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