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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 15 of 25 · the same problems every time you open this link.

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One paper per student

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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 bread rose in the oven., It was cold, so we wore our hats., A fox ran across the road., The sun came out, so we went to the park., We ate lunch under the tree., We could bake a cake, or we could make pancakes.

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

Sort: My sister plays the violin., The baby fell asleep., The bread rose, and Dad sliced it., You can draw a picture, or you can write a poem., Leo likes apples, but his brother likes pears., Grandpa fixed the old clock.

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

Sort: Mia found a shell, and she gave it to me., The store was closed, so we went home., The puppy chewed my sock., The path was icy, but nobody fell., Our teacher read us a story., Rain dripped from the roof.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 15 · free to copy for classroom use

Answer key — Simple or Compound?

Set 15. Prints on its own sheet.

  1. 1.1. A fox ran across the road. — Simple sentence 2. It was cold, so we wore our hats. — Compound sentence 3. The bread rose in the oven. — Simple sentence 4. The sun came out, so we went to the park. — Compound sentence 5. We ate lunch under the tree. — Simple sentence 6. We could bake a cake, or we could make pancakes. — Compound sentence
  2. 2.1. Grandpa fixed the old clock. — Simple sentence 2. Leo likes apples, but his brother likes pears. — Compound sentence 3. My sister plays the violin. — Simple sentence 4. The baby fell asleep. — Simple sentence 5. The bread rose, and Dad sliced it. — Compound sentence 6. You can draw a picture, or you can write a poem. — Compound sentence
  3. 3.1. Mia found a shell, and she gave it to me. — Compound sentence 2. Our teacher read us a story. — Simple sentence 3. Rain dripped from the roof. — Simple sentence 4. The path was icy, but nobody fell. — Compound sentence 5. The puppy chewed my sock. — Simple sentence 6. The store was closed, so we went home. — Compound sentence

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