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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 17 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: We ate lunch under the tree., The path was icy, but nobody fell., The sun came out, so we went to the park., Grandpa fixed the old clock., Rain dripped from the roof., I wanted to go out, but it was raining.

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

Sort: The puppy chewed my sock., The dog barked, and the cat ran away., The bell rang, and the children lined up., A bird built a nest in the hedge., It was cold, so we wore our hats., The bread rose in the oven.

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

Sort: We could bake a cake, or we could make pancakes., The train left the station., My sister plays the violin., A fox ran across the road., The bread rose, and Dad sliced it., Leo likes apples, but his brother likes pears.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 17 · free to copy for classroom use

Answer key — Simple or Compound?

Set 17. Prints on its own sheet.

  1. 1.1. Grandpa fixed the old clock. — Simple sentence 2. I wanted to go out, but it was raining. — Compound sentence 3. Rain dripped from the roof. — Simple sentence 4. The path was icy, but nobody fell. — Compound sentence 5. The sun came out, so we went to the park. — Compound sentence 6. We ate lunch under the tree. — Simple sentence
  2. 2.1. A bird built a nest in the hedge. — 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 dog barked, and the cat ran away. — Compound sentence 6. The puppy chewed my sock. — Simple sentence
  3. 3.1. A fox ran across the road. — Simple sentence 2. Leo likes apples, but his brother likes pears. — Compound sentence 3. My sister plays the violin. — Simple sentence 4. The bread rose, and Dad sliced it. — Compound sentence 5. The train left the station. — Simple sentence 6. We could bake a cake, or we could make pancakes. — Compound sentence

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