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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 10 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 bell rang, and the children lined up., It was cold, so we wore our hats., The moon rose over the hill., A fox ran across the road., The bread rose, and Dad sliced it.

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

Sort: I wanted to go out, but it was raining., Rain dripped from the roof., Leo likes apples, but his brother likes pears., We could bake a cake, or we could make pancakes., A bird built a nest in the hedge., Grandpa fixed the old clock.

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

Sort: The puppy chewed my sock., Mia found a shell, and she gave it to me., The bread rose in the oven., You can draw a picture, or you can write a poem., The baby fell asleep., The sun came out, so we went to the park.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 10 · free to copy for classroom use

Answer key — Simple or Compound?

Set 10. 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 bell rang, and the children lined up. — Compound sentence 4. The bread rose, and Dad sliced it. — Compound sentence 5. The moon rose over the hill. — Simple sentence 6. We ate lunch under the tree. — Simple sentence
  2. 2.1. A bird built a nest in the hedge. — Simple sentence 2. Grandpa fixed the old clock. — Simple sentence 3. I wanted to go out, but it was raining. — Compound sentence 4. Leo likes apples, but his brother likes pears. — Compound sentence 5. Rain dripped from the roof. — Simple sentence 6. We could bake a cake, or we could make pancakes. — Compound sentence
  3. 3.1. Mia found a shell, and she gave it to me. — Compound sentence 2. The baby fell asleep. — Simple sentence 3. The bread rose in the oven. — Simple sentence 4. The puppy chewed my sock. — Simple sentence 5. The sun came out, so we went to the park. — Compound 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.