Run-on sentences worksheets
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A run-on squeezes two sentences into one. Find where the first idea ends, then add a period and a capital letter.
Six grades, four different sets of sentences: 3rd and 4th grade share one, and so do 5th and 6th grade. Print one here, or open a grade for examples and teaching notes.
Print by grade
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3rd grade
Run-on sentences worksheets for third grade print two sentences squeezed together with nothing between them. Your child finds where the first idea ends and writes in the missing period and capital letter. The choice version asks them to pick the correctly split sentence instead.
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4th grade Core grade
Each print is a different sheet with its own answer key. You don't need to sign up.
Fourth grade run-on worksheets practice L.4.1.f directly: recognize and correct run-ons. The run-ons get longer, and the errors to catch now include the comma splice, two sentences joined by a bare comma, which is the error fourth graders write most.
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5th grade
Fifth grade run-on sentences worksheets add the second repair tool: a comma plus a joining word like and, but, or so. Some items are best split with a period; others read better joined. Your child picks the fix that keeps the meaning smooth.
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6th grade
Sixth grade run-on worksheets read like editing practice for real essays: longer clauses, comma splices, and run-ons buried in detail. Your child repairs each one with a period or a comma and a conjunction, the same two moves editors use.
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7th grade
Seventh grade run-on worksheets name both kinds: the fused sentence, with nothing between two sentences, and the comma splice, with only a comma. Your child writes in the missing period and capital. The choice version asks them to find the one correct sentence next to the fused version and the splice.
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8th grade
Eighth grade run-on worksheets go after the comma splice in its grown-up forms: sentences that already have commas in them, and splices built on however and therefore. Your child writes the missing period and capital. The choice version adds semicolon repairs, so they see how a semicolon can join two sentences where a comma cannot.
More on sentence building
All sentence structure worksheets →
Or all English worksheets: every grade, every topic.