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Commas in Compound Sentences is a free printable Grade 4 English worksheet on the comma before and, but and so in a compound sentence, aligned to Common Core standard L.4.2. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 17 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Commas in Compound Sentences

L.4.2

NameDate

Rewrite each sentence correctly.

1.commas

You can have the red one or you can have the green one.

2.commas

The dam slows the water and silt drops out.

3.commas

It was getting dark so we lit the fire.

4.commas

I wanted to swim but the pool was closed.

5.commas

The wind blew hard and the old tree fell over.

6.commas

We could walk to the park or we could take the bus.

7.commas

They wove for a day and Arachne's cloth was better.

LessonPrint · L.4.2 · Set 17 · free to copy for classroom use

Answer key — Commas in Compound Sentences

Set 17. Prints on its own sheet.

  1. 1.You can have the red one, or you can have the green one.
  2. 2.The dam slows the water, and silt drops out.
  3. 3.It was getting dark, so we lit the fire.
  4. 4.I wanted to swim, but the pool was closed.
  5. 5.The wind blew hard, and the old tree fell over.
  6. 6.We could walk to the park, or we could take the bus.
  7. 7.They wove for a day, and Arachne's cloth was better.

Last reviewed 2026-09-05. Aligned to L.4.2 of the Common Core State Standards for English Language Arts.