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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 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.

Simple or Compound?

L.3.1

NameDate

Sort each sentence into the right column.

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

Sort: The train left the station., You can draw a picture, or you can write a poem., We ate lunch under the tree., A bird built a nest in the hedge., Mia found a shell, and she gave it to me., The bread rose, and Dad sliced it.

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

Sort: It was cold, so we wore our hats., Grandpa fixed the old clock., The store was closed, so we went home., The bread rose in the oven., The bell rang, and the children lined up., The puppy chewed my sock.

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

Sort: A fox ran across the road., The moon rose over the hill., I wanted to go out, but it was raining., The path was icy, but nobody fell., The baby fell asleep., Leo likes apples, but his brother likes pears.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 8 · free to copy for classroom use

Answer key — Simple or Compound?

Set 8. Prints on its own sheet.

  1. 1.1. A bird built a nest in the hedge. — Simple sentence 2. Mia found a shell, and she gave it to me. — Compound sentence 3. The bread rose, and Dad sliced it. — Compound sentence 4. The train left the station. — 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
  2. 2.1. Grandpa fixed the old clock. — Simple sentence 2. It was cold, so we wore our hats. — Compound sentence 3. The bell rang, and the children lined up. — Compound sentence 4. The bread rose in the oven. — Simple sentence 5. The puppy chewed my sock. — Simple sentence 6. The store was closed, so we went home. — Compound sentence
  3. 3.1. A fox ran across the road. — Simple sentence 2. I wanted to go out, but it was raining. — Compound sentence 3. Leo likes apples, but his brother likes pears. — Compound sentence 4. The baby fell asleep. — Simple sentence 5. The moon rose over the hill. — Simple sentence 6. The path was icy, but nobody fell. — Compound sentence

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