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Grade 3 · Reading · Comprehension

3rd Grade Main Idea and Key Details worksheets

6 printable versionsBuilding ConfidenceAbout 3 minutes eachFree · no account

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Main Idea and Key Details

Grade 3 Reading Worksheet - Building Confidence

NameDate

Read each passage. Circle the sentence that tells the main idea.

  1. Read this first

    Busy Honeybees

    Honeybees live together in a hive. Each bee has a job. Some bees gather nectar from flowers. Others feed the baby bees. A few guard the door of the hive.

    • Insects are interesting animals.
    • Honeybees in a hive each have a job.
    • Other bees feed the baby bees.
  2. The Library

    Libraries are places to find books for free. You can borrow a book with a library card. Many libraries have story time for young children. Some also have computers you can use.

    • Reading is important.
    • A library lets people borrow books and use other things for free.
    • Some libraries have computers you can use.
  3. Penguins

    Penguins are birds that cannot fly. They use their wings to swim fast in the sea. Their feathers keep them warm and dry. They eat fish and krill.

    • Birds live in many places.
    • Penguins are birds that swim instead of fly.
    • Penguins use their wings to swim fast.
  4. Maya at the Piano

    Maya practices the piano every day. She plays for twenty minutes after school. She plays her hardest song on Saturdays. Her teacher says her playing is getting better.

    • Maya practices the piano every day and is getting better.
    • She plays her hardest song on Saturdays.
    • Music is fun.
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3rd Grade Main Idea and Key Details worksheet 1 – printable PDF
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About this worksheet

The main idea is what a whole passage is mostly about, and the key details are the facts that support it. A third grader learns to tell them apart: the main idea covers everything in the passage, while a detail covers only one part. This topic has both skills, and each worksheet practices one: the odd-numbered versions ask for the main idea of four short passages, and the even-numbered versions ask for a detail from each passage.

The wrong choices include a detail that is too small to be the main idea, a statement that is too big, and a sentence the passage does not say. Building Confidence has three choices, On Level and Challenge Me have four. Ask your child to say the passage in one sentence before reading the choices.

What your child will learn

  • Find the main idea of a short passage
  • Tell a key detail from the main idea
  • Check that a detail is really in the passage

Common Core standard: RL.3.2, RI.3.2

Worked example

Honeybees each have a job: some gather nectar, some feed babies, and some guard the door. The main idea is that bees in a hive each have a job. 'Some bees gather nectar' is one detail.

Common mistake

Choosing a detail as the main idea because it appears in the passage, even though it covers only one part.

Helpful hint

Ask: does this sentence cover the whole passage, or just one part?

Questions parents ask

What is the most common mistake with main idea and key details?

Choosing a detail as the main idea because it appears in the passage, even though it covers only one part.

How can I help my child with main idea and key details?

Ask: does this sentence cover the whole passage, or just one part?

Are these 3rd grade reading worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

Similar: Ask and Answer Questions · Find Text Evidence

More 3rd grade comprehension

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