Free printable practice
Subject Predicate Practice Activities
Grade 3 students practise finding the subject and predicate of a sentence, then use that understanding to write clearer complete sentences.
Practice that builds confidence
Understanding subjects and predicates
These Grade 3 grammar and writing worksheets help children identify the two main parts of a complete sentence: the subject, which tells who or what the sentence is about, and the predicate, which tells what the subject does or is.
The printable activities include sentence sorting, underlining, matching, and sentence-building tasks so students can move from recognizing subjects and predicates to writing complete sentences of their own.
A complete sentence needs a subject and a predicate. In Grade 3, students learn to ask, “Who or what is this sentence about?” to find the subject, and “What does the subject do or what is said about it?” to find the predicate. In The playful puppy chased the ball, The playful puppy is the subject and chased the ball is the predicate.
How the practice progresses
The worksheets begin with clear sentences where the subject comes first, then include longer subjects, longer predicates, and sentences with describing words. Children may underline the subject once and the predicate twice, match sentence halves, choose the missing part, or decide whether a group of words is a complete sentence or a fragment.
A simple parent routine
At home, read one sentence aloud and have your child tap the table when they hear who or what the sentence is about. Then ask them to say the action or information part. After a few examples, invite them to write a sentence about a pet, sport, book character, or family activity and draw a line between the subject and predicate.
Classroom uses for teachers
Teachers can use these printables during grammar lessons, literacy centers, morning work, small-group reteaching, or quick checks after sentence instruction. They also work well before paragraph writing because students who can spot sentence parts are better prepared to revise fragments and add missing information.
Common errors to watch for
Some children circle only one noun as the subject instead of the complete subject, such as marking puppy instead of The playful puppy. Others stop the predicate at the verb and leave out important words, such as chased instead of chased the ball. Watch also for fragments like Ran across the yard, which has a predicate idea but no subject.
A child-friendly strategy
Teach students to use the “who/what + did/is” check. First ask, “Who or what?” Then ask, “Did what?” or “Is what?” If both answers are present and make sense together, the sentence is complete. This gives children a quick editing tool they can use in their own writing.
Free printable PDF download
Use this grade 3 subject and predicate worksheet page to preview the activity, print it, or download it as a PDF for quick practice. It works well for homework, homeschool lessons, tutoring, morning work, revision, and classroom centers.
Answers and answer key support
After the child completes the worksheet independently, parents and teachers can use the answer support or answer key information to check the work, review mistakes, and choose the next practice step.
Why iBloom worksheets help
iBloom worksheets give repeated practice without feeling repetitive. The activities vary the response type while keeping the focus on subject and predicate recognition, so students build confidence, accuracy, and stronger sentence awareness step by step.
Helpful answers
Frequently asked questions
What is the main skill in these Grade 3 worksheets?
Students practise identifying the subject and predicate in complete sentences and then use that knowledge to complete, sort, and write sentences.
How do I explain subject and predicate to a third grader?
Tell them the subject answers “who or what the sentence is about,” and the predicate answers “what the subject does or what is said about it.”
Do these worksheets include complete subjects and complete predicates?
Yes. The practice helps children see that the subject may include describing words, and the predicate may include more than just the verb.
Can these activities help with sentence fragments?
Yes. By checking whether both a subject and predicate are present, students learn why a fragment is incomplete and how to fix it.
How can teachers use these worksheets in class?
They can be used for direct grammar practice, literacy centers, small-group reteaching, morning work, homework, or quick checks before writing lessons.
Is this grade 3 subject and predicate worksheet free?
Yes. You can preview it for free and use the printable worksheet for home or classroom practice.
Can I download this grade 3 subject and predicate worksheet as a PDF?
Yes. Use the worksheet download option to save a printable PDF, or print the worksheet directly from the page.
Does this grade 3 subject and predicate worksheet include answers or an answer key?
When the activity has fixed answers, iBloom includes answer support so parents and teachers can check the completed worksheet.