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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 20 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 path was icy, but nobody fell., Our teacher read us a story., A bird built a nest in the hedge., I wanted to go out, but it was raining., A fox ran across the road., The sun came out, so we went to the park.

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

Sort: Leo likes apples, but his brother likes pears., We ate lunch under the tree., The moon rose over the hill., We could bake a cake, or we could make pancakes., Grandpa fixed the old clock., The bread rose, and Dad sliced it.

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

Sort: The puppy chewed my sock., The baby fell asleep., It was cold, so we wore our hats., You can draw a picture, or you can write a poem., The dog barked, and the cat ran away., The train left the station.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 20 · free to copy for classroom use

Answer key — Simple or Compound?

Set 20. Prints on its own sheet.

  1. 1.1. A bird built a nest in the hedge. — Simple sentence 2. A fox ran across the road. — Simple sentence 3. I wanted to go out, but it was raining. — Compound sentence 4. Our teacher read us a story. — Simple sentence 5. The path was icy, but nobody fell. — Compound sentence 6. The sun came out, so we went to the park. — Compound sentence
  2. 2.1. Grandpa fixed the old clock. — Simple sentence 2. Leo likes apples, but his brother likes pears. — Compound sentence 3. The bread rose, and Dad sliced it. — Compound sentence 4. The moon rose over the hill. — Simple sentence 5. We ate lunch under the tree. — Simple sentence 6. We could bake a cake, or we could make pancakes. — Compound sentence
  3. 3.1. It was cold, so we wore our hats. — Compound sentence 2. The baby fell asleep. — Simple sentence 3. The dog barked, and the cat ran away. — Compound sentence 4. The puppy chewed my sock. — Simple sentence 5. The train left the station. — Simple sentence 6. You can draw a picture, or you can write a poem. — Compound sentence

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