Writing worksheet · Sentence building

Fix the Run-On Sentences

Six run-on sentences to split into two complete sentences each.

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Grade level
Grades 2–3
Time
About 20 minutes
Answer key
Yes, page 2 of the PDF
Kids practice
Complete sentences, Subjects and predicates, Sentence types, Combining sentences

What kids do

“A run-on sentence crams two ideas together. Split each one into two sentences with a period and a capital letter.”

Printed on the sheet:

  1. The dog barked the cat ran away. → The dog barked. The cat ran away.
  2. 1. I like snow it is fun to sled.
  3. 2. We went to the store we bought milk.
  4. 3. My sister is six she likes to draw.
  5. 4. The sun came out the puddles dried up.
  6. 5. Ben lost a tooth he put it under his pillow.
  7. 6. The bell rang we lined up.

Teacher tip

Have kids read each run-on in one breath. Where they run out of air is often where the period goes.

How to use it

  • Build a sentence on the board with word cards before the sheet.
  • Have kids clap once for the naming part and once for the telling part.
  • Keep a word wall or a word bank in reach so spelling does not stop the ideas.

Watch for

Kids who think a long sentence must be a run-on. Length is not the problem; missing joins are.

Talk about it

  • Can you find a sentence like this in your reading book?
  • What did you change when you reread your work?

Take it further

Have kids find and fix one sentence in their own writing journal.

US Letter, prints well in black and white. Free for home and classroom use: print as many copies as you need.

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