Skip to content
Start My 3 Free Days $0 today · cancel anytime

3rd Grade Grammar Worksheets

41 3rd grade grammar worksheets. Teacher favorites: Proofreading Worksheet and Creating Complete Sentences Worksheet. How teachers use these

3rd Grade Grammar Worksheets

41 3rd grade grammar worksheets. Teacher favorites: Proofreading Worksheet and Creating Complete Sentences Worksheet. How teachers use these

Worksheet
Worksheet3rd GradeProofreading Worksheet

This 3rd grade proofreading worksheet has students hunt for and fix eight misspelled words in a fun garden paragraph. Answer key included — perfect for quick, no-prep spelling and editing practice at home or school.

Worksheet
Worksheet3rd GradeCreating Complete Sentences Worksheet

This Creating Complete Sentences Worksheet asks 3rd graders to spot complete sentences and fix fragments by adding a missing subject or predicate. Answer key included — perfect for quick, no-prep grammar practice at home or school.

Worksheet
Worksheet3rd GradeCompound Predicates Sentences Worksheet

This compound predicates sentences worksheet gives 3rd grade students three levels of practice: underline, combine, and write their own. An answer key is included, so it works for quick grammar review at school or at home.

Worksheet
Worksheet3rd GradeParts of Speech Crossword Puzzle

This Parts of Speech Crossword Puzzle has 3rd grade students match grammar clues to nouns, verbs, adjectives, and more, then fill in the grid. Includes an answer key and a helpful word bank for no-prep practice.

Worksheet
Worksheet3rd GradeAdding Commas in a Series Worksheet

This Adding Commas in a Series Worksheet gives 3rd graders practice separating list items with commas, spotting misplaced commas, and writing their own list sentence. Answer key included for quick, no-prep grammar practice.

Worksheet
Worksheet3rd GradeWho or What? Compound Subjects Worksheet

Using this Who or What? Compound Subjects Worksheet, 3rd graders name the two subjects in a sentence, join sentence pairs, and write one of their own. Answer key included for quick, no-prep grammar practice.

Worksheet
Worksheet3rd GradeMemorial Day Nouns Verbs Adjectives Worksheet

This Memorial Day Nouns Verbs Adjectives Worksheet has 3rd graders sort twelve holiday words, label bold words in sentences, and write two of their own. Answer key included for quick, no-prep grammar practice.

Worksheet
Worksheet3rd GradeWhat Kind of Sentence? Worksheet

With this What Kind of Sentence? Worksheet, 3rd Grade students add the missing end mark and label each sentence as a statement, question, command, or exclamation. An answer key is included, so practice is quick to check.

Worksheet
Worksheet3rd GradeVerb Adjective or Preposition Worksheet

This Verb Adjective or Preposition Worksheet has 3rd graders choose the word each sentence needs, then name its part of speech. Answer key included, so grammar practice is ready in one print.

Worksheet
Worksheet3rd GradeSubject Predicate Worksheet

A 3rd grade subject predicate worksheet where kids underline the subject and predicate in eight sentences, then write their own. Includes a full answer key for quick, confident grammar practice.

Worksheet
Worksheet3rd GradePunctuation Review Worksheet

This punctuation review worksheet gives 3rd graders six sentences to mark and three to rewrite with commas, quotation marks, and end marks. An answer key is included, so students can check their own editing right away.

Worksheet
Worksheet3rd GradeRewriting Incomplete Sentences Worksheet

This rewriting incomplete sentences worksheet helps 3rd graders sort complete and incomplete sentences, then rewrite the fragments into full thoughts. Includes an answer key for fast, no-prep grammar practice at home or school.

Worksheet
Worksheet3rd GradeHomophones Crossword Puzzle

This homophones crossword puzzle worksheet asks 3rd graders to choose between sound-alike word pairs, then check every answer in an interlocking puzzle. An answer key is included, so practice stays quick and independent.

Worksheet
Worksheet3rd GradeAbbreviations Fill in the Blank Worksheet

This abbreviations fill in the blank worksheet gives 3rd Grade students two-way practice writing abbreviations, expanding them into full words, and rewriting sentences. Answer key included, so students build accuracy fast.

Worksheet
Worksheet3rd GradeRewriting Compound Subjects Worksheet

The Rewriting Compound Subjects Worksheet has 3rd grade students combine four sentence pairs into one sentence with a compound subject, then split two more apart. An answer key is included, so checking is quick.

Worksheet
Worksheet3rd GradeMultiple Choice Change Y to I Worksheet

This Multiple Choice Change Y to I Worksheet gives 3rd grade students practice spelling plural nouns by changing y to i. An answer key is included, making it a simple way to build strong spelling skills.

Worksheet
Worksheet3rd GradeWord Relationships Worksheet

This word relationships worksheet has 3rd graders sort everyday things as juicy, sharp, or soft and pick words that describe real people. An answer key is included for fast checking.

Worksheet
Worksheet3rd GradeAdding Quotation Marks Worksheet

This Adding Quotation Marks Worksheet gives 3rd graders six sentences of dialogue to punctuate and three more to write over again with the comma and the marks in place. Answer key included, so practice checks itself.

Worksheet
Worksheet3rd GradeProofreading Spelling Errors Worksheet

Third graders proofread five sentences, a short paragraph, and two rewrites to catch and fix misspelled words with this proofreading spelling errors worksheet. An answer key is included for quick checking.

Worksheet
Worksheet3rd GradePossession & Contraction Apostrophe Worksheet

The Possession & Contraction Apostrophe Worksheet gives 3rd graders focused practice using apostrophes for contractions and possessive nouns. Includes a complete answer key — perfect for quick, no-prep punctuation practice.

From our teachers' playbook

Sentences that do more

What do 3rd graders learn about grammar?

Third grade grammar is about explaining how words work in a sentence. Kids learn what nouns, pronouns, verbs, adjectives and adverbs actually do, and they use simple verb tenses: I walk, I walked, I will walk. They make subjects and verbs agree, form comparatives and superlatives (big, bigger, biggest), and join ideas with words like and, but, because and when. Sentences grow too: compound subjects ("Sam and Lia played") and compound predicates ("Sam ran and jumped"). Commas in a series and in addresses round it out. The click moment is when kids start combining choppy sentences on their own.

Our favorite ways to teach 3rd grade grammar

Third graders are ready to play with sentence structure. These moves make grammar feel like building.

Prefix showdown

Turn prefixes into a quick team game: call out "dis + like" and the first team to say "dislike" and its meaning gets the point. Three rounds a day for a week and pre, dis and mis become automatic.

Why it works: playful practice with a clear goal keeps kids practicing longer, and simple learning games have been shown to build real skills (Ramani and Siegler, 2008).

Prefixes Pre Dis Mis GameTry it withPrefixes Pre Dis Mis GameGamesOpen it →

Double the action

Write "The dog barked. The dog ran." on strips and have kids cut and glue them into one sentence with "and." Then they find two choppy sentences in their own writing and combine them. That's a compound predicate they built themselves.

Why it works: kids understand an idea best when they touch it, then draw it, then write it, the order the U.S. Department of Education recommends for elementary math.

Compound Predicates Sentences WorksheetTry it withCompound Predicates Sentences WorksheetWorksheetsOpen it →

Proofread out loud

Read a short paragraph aloud slowly, stopping when something sounds wrong. "Wait, they was? That doesn't sound right." Kids learn to trust their ears and catch agreement errors in their own work.

Why it works: handing over the work step by step, from teacher to student, is one of the most widely used teaching frameworks (Pearson and Gallagher, 1983).

Proofreading WorksheetTry it withProofreading WorksheetWorksheetsOpen it →

Questions parents and teachers ask us

What grammar do 3rd graders learn?

Third graders learn the jobs of nouns, pronouns, verbs, adjectives and adverbs, simple verb tenses, subject-verb agreement, comparatives and superlatives, and conjunctions. They also write compound and complex sentences and use commas in a series and in addresses.

What is a compound subject?

A compound subject is two or more subjects sharing the same verb, joined by "and" or "or." In "Mia and Leo built a fort," Mia and Leo is the compound subject.

What is subject-verb agreement?

It means the verb matches the subject. One dog "runs," but two dogs "run." Third graders practice this in speaking and writing.

How can I help my 3rd grader with grammar at home?

Read aloud together and point out interesting sentences. Play "make it longer" by adding details to a short sentence. When your child writes, ask them to read it aloud and listen for what sounds off.