

This Grade 4 grammar worksheet focuses on one of the most common punctuation mistakes students make—using apostrophes incorrectly when forming plural nouns. Many learners confuse plurals and possessives, often adding apostrophes where they are not needed. This worksheet helps children clearly understand when apostrophes should and should not be used.
Through a variety of engaging grammar exercises such as multiple-choice questions, True/False identification, fill-in-the-blanks, sentence correction, and paragraph editing, students learn to identify correct plural forms and avoid unnecessary apostrophes. These activities give learners practical editing experience so they can recognize errors and apply the correct rule in real writing situations.
Understanding how apostrophes work is essential for clear and correct writing. For Grade 4 learners, this topic is important because:
1. Apostrophes are used for possession, not regular plurals.
2. Plural nouns usually end with “s” without an apostrophe.
3. Misusing apostrophes can change the meaning of a sentence.
4. Correct punctuation improves clarity and accuracy in writing.
This worksheet includes five grammar-rich activities that build confidence in using plurals and apostrophes correctly.
🧠 Exercise 1 – Choose the Correct Plural Form
Students select the correct plural noun that does not incorrectly include an apostrophe.
Example: apple’s / apples / apples’ → apples
✏️ Exercise 2 – True or False
Students read sentences and decide whether apostrophes are used correctly when writing plural nouns.
📋 Exercise 3 – Fill in the Blanks
Learners choose the correct word form to complete each sentence, practicing apostrophes in possession and contractions.
📝 Exercise 4 – Rewrite the Sentence Correctly
Students rewrite sentences by correcting apostrophe mistakes in plural nouns.
📚 Exercise 5 – Paragraph Editing
Students edit a paragraph by correcting incorrect apostrophe usage, helping them apply punctuation rules in a real writing context.
Exercise 1 – Choose the Correct Plural Form
1. apples
2. cats
3. dogs
4. children
5. teachers
6. boys
7. friends
8. classes
9. countries
10. books
Exercise 2 – True or False
1. False
2. True
3. False
4. True
5. True
6. False
7. False
8. True
9. True
10. False
Exercise 3 – Fill in the Blanks
1. dogs
2. brother’s
3. its
4. It’s
5. Mary’s
6. John’s
7. Anna’s
8. its
9. their
10. It’s
Exercise 4 – Corrected Sentences
1. The boys are playing.
2. The cats are sleeping.
3. Books are on the table.
4. The dogs are barking.
5. The child’s toy is broken.
6. The classes’ rooms are ready.
7. The cats’ food is fresh.
8. The countries’ borders are safe.
9. The boys’ games are fun.
10. The teachers’ desks are tidy.
Exercise 5 – Corrected Paragraph
The two dogs were playing in the yard. I saw my friends’ bikes outside; they were left there all day. The teacher’s car was parked in the lot. The books’ covers were torn from all the use. The children’s toys were scattered across the floor. My sisters’ shoes were all over the place. The cats’ fur was everywhere in the house. The families’ houses were decorated for the holidays.
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Plural nouns usually do not need apostrophes unless showing possession.
They confuse plural forms with possessive forms.
Focused correction exercises explain correct apostrophe use.