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Simple or Compound? is a free printable Grade 3 English worksheet on telling one complete thought from two joined ones, aligned to Common Core standard L.3.1. It prints 3 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 18 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.

Simple or Compound?

L.3.1

NameDate

Sort each sentence into the right column.

1.Sort each one: Simple sentence or Compound sentence?

Sort: My sister plays the violin., The bread rose, and Dad sliced it., The baby fell asleep., The path was icy, but nobody fell., The bread rose in the oven., I wanted to go out, but it was raining.

Simple sentenceCompound sentence
2.Sort each one: Simple sentence or Compound sentence?

Sort: The bell rang, and the children lined up., The dog barked, and the cat ran away., You can draw a picture, or you can write a poem., The moon rose over the hill., We ate lunch under the tree., Grandpa fixed the old clock.

Simple sentenceCompound sentence
3.Sort each one: Simple sentence or Compound sentence?

Sort: The store was closed, so we went home., The train left the station., The sun came out, so we went to the park., Our teacher read us a story., A bird built a nest in the hedge., Mia found a shell, and she gave it to me.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 18 · free to copy for classroom use

Answer key — Simple or Compound?

Set 18. Prints on its own sheet.

  1. 1.1. I wanted to go out, but it was raining. — Compound sentence 2. My sister plays the violin. — Simple sentence 3. The baby fell asleep. — Simple sentence 4. The bread rose in the oven. — Simple sentence 5. The bread rose, and Dad sliced it. — Compound sentence 6. The path was icy, but nobody fell. — Compound sentence
  2. 2.1. Grandpa fixed the old clock. — Simple sentence 2. The bell rang, and the children lined up. — Compound sentence 3. The dog barked, and the cat ran away. — Compound sentence 4. The moon rose over the hill. — Simple sentence 5. We ate lunch under the tree. — Simple sentence 6. You can draw a picture, or you can write a poem. — Compound sentence
  3. 3.1. A bird built a nest in the hedge. — Simple sentence 2. Mia found a shell, and she gave it to me. — Compound sentence 3. Our teacher read us a story. — Simple sentence 4. The store was closed, so we went home. — Compound sentence 5. The sun came out, so we went to the park. — Compound sentence 6. The train left the station. — Simple sentence

Last reviewed 2026-09-05. Aligned to L.3.1 of the Common Core State Standards for English Language Arts.