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3rd Grade Comparative and Superlative Adjectives Worksheets

Comparative adjectives (-er, or more) compare two things; superlatives (-est, or most) crown a winner among three or more. Third graders handle spelling changes along the way (big/bigger, happy/happiest) and learn which adjectives take more/most instead, per the grade-3 standard.

Free printable PDF, aligned to Common Core L.3.1.g. One skill per page, answer key on page two.

Every sheet is one of a kind and prints with a version code, so you can reprint the exact same one later. New version every click.

A sample 3rd grade sheet. Yours will have different sentences. Click it to print your own.

The kind of sentences you'll get

Circle the letter of the form that fits the comparison.

  1. The sunset tonight was ______ than last night's. more beautiful · beautifuler

    Answer: more beautiful

  2. Of the two ponies, the brown one is ______ . faster · fastest
  3. A marker line is ______ than a pencil line. thicker · thickest

Every print draws a fresh mix of sentences at this level, so a make-up test or a second sibling gets a different sheet.

What's on each sheet

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

The spelling changes deserve their own pass: consonant doubling (big/bigger), y to i (happy/happiest), silent-e words (nice/nicer). Then introduce the syllable rule of thumb: short adjectives take endings, longer ones take more/most. "More prettier" style doubling is the top error at this level; naming it directly helps kids catch themselves.

Watch for: Long adjectives use more and most instead of -er and -est: more colorful, most interesting, never colorfuler. Never double up: 'more taller' and 'most fastest' are always wrong.

Common questions about comparative and superlative adjectives

When do you use more and most instead of -er and -est?
With longer adjectives. One-syllable words take endings (faster, oldest); words of three or more syllables take more/most (more colorful, most interesting); two-syllable words split, and the ear usually knows (happier works, "more happy" sounds padded). Colorfuler is the classic trap answer.
Why is "more taller" wrong?
Because it doubles the comparison; taller already contains the "more." English takes one comparative per adjective, either the ending or the word, never both. Kids stop making this error quickly once someone names it, which is exactly what the answer key does.

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Aligned to Common Core L.3.1.g. Reviewed by the One More Sheet curriculum team. Content version 68, updated July 2026.