Run-On or Sentence Check

Do you know how to tell if a sentence is complete or if it runs on too long? In the Run-On or Sentence Check playsheet, you’ll practice spotting run-on sentences and fixing them. By mastering this skill, you’ll make your writing clearer, smoother, and easier to read.

As you complete the activities, you’ll see how run-on sentences happen when two or more complete thoughts are joined without the right punctuation or connecting words. For example, I love pizza I eat it every Friday is a run-on, while I love pizza, and I eat it every Friday is correct.

Each challenge guides you to read sentences, decide if they are run-ons or complete, and then rewrite the run-ons correctly. You’ll also practice using conjunctions, commas, and periods to separate ideas properly. These exercises build strong grammar habits and improve sentence structure.