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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 19 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: Grandpa fixed the old clock., It was cold, so we wore our hats., We ate lunch under the tree., The bread rose, and Dad sliced it., My sister plays the violin., We could bake a cake, or we could make pancakes.

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

Sort: Rain dripped from the roof., The bread rose in the oven., The bell rang, and the children lined up., The train left the station., The path was icy, but nobody fell., The dog barked, and the cat ran away.

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

Sort: The store was closed, so we went home., Leo likes apples, but his brother likes pears., The moon rose over the hill., The sun came out, so we went to the park., The puppy chewed my sock., The baby fell asleep.

Simple sentenceCompound sentence

LessonPrint · L.3.1 · Set 19 · free to copy for classroom use

Answer key — Simple or Compound?

Set 19. Prints on its own sheet.

  1. 1.1. Grandpa fixed the old clock. — Simple sentence 2. It was cold, so we wore our hats. — Compound sentence 3. My sister plays the violin. — Simple sentence 4. The bread rose, and Dad sliced it. — 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. Rain dripped from the roof. — Simple sentence 2. The bell rang, and the children lined up. — Compound sentence 3. The bread rose in the oven. — Simple sentence 4. The dog barked, and the cat ran away. — Compound sentence 5. The path was icy, but nobody fell. — Compound sentence 6. The train left the station. — Simple sentence
  3. 3.1. Leo likes apples, but his brother likes pears. — Compound sentence 2. The baby fell asleep. — Simple sentence 3. The moon rose over the hill. — Simple sentence 4. The puppy chewed my sock. — Simple sentence 5. The store was closed, so we went home. — Compound sentence 6. The sun came out, so we went to the park. — Compound sentence

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