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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 2 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: It was cold, so we wore our hats., The store was closed, so we went home., The moon rose over the hill., You can draw a picture, or you can write a poem., The train left the station., Our teacher read us a story.

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

Sort: The bread rose, and Dad sliced it., The baby fell asleep., Mia found a shell, and she gave it to me., The path was icy, but nobody fell., 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 bell rang, and the children lined up., My sister plays the violin., A bird built a nest in the hedge., Rain dripped from the roof., The sun came out, so we went to the park., The dog barked, and the cat ran away.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 2 · free to copy for classroom use

Answer key — Simple or Compound?

Set 2. Prints on its own sheet.

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

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