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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 8 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

The dam slows the water and silt drops out.

2.commas

Jade studied every night so she passed the test easily.

3.commas

Lichens absorb what is in the air so they vanish where it is dirty.

4.commas

It was getting dark so we lit the fire.

5.commas

The bell rang and the children ran outside.

6.commas

The wind blew hard and the old tree fell over.

7.commas

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

LessonPrint · L.4.2 · Set 8 · free to copy for classroom use

Answer key — Commas in Compound Sentences

Set 8. Prints on its own sheet.

  1. 1.The dam slows the water, and silt drops out.
  2. 2.Jade studied every night, so she passed the test easily.
  3. 3.Lichens absorb what is in the air, so they vanish where it is dirty.
  4. 4.It was getting dark, so we lit the fire.
  5. 5.The bell rang, and the children ran outside.
  6. 6.The wind blew hard, and the old tree fell over.
  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.