Punctuation Practice Worksheet for 12-Year-Olds — English Grammar Exercises

Instructions

Read through each section carefully. Your mission is to correct the punctuation in the sentences below. Punctuation marks are like traffic signals for writing; they tell the reader when to slow down, pause, or stop. Let's see if you can get all the signals right!

Part 1: The Comma Conundrum

Commas can be tricky! Add commas where they are needed in the sentences below. Remember to use them in lists and before conjunctions (like 'and', 'but', 'so') that connect two full sentences.

1. My favorite video games are Minecraft Roblox and Fortnite.
2. I wanted to go to the park but it started to rain.
3. Before you leave please remember to pack your lunch your water bottle and your jacket.
4. Mia is a talented artist and she plans to go to art school.
5. After the long and exciting movie we all went out for pizza.

Part 2: Apostrophe Antics

Apostrophes show possession (who owns something) or create contractions (joining two words). Choose the correct word in the parentheses or add an apostrophe where it's missing.

1. (Its / It's) a beautiful day outside.
2. The dogs tail wagged excitedly when it saw the treat.
3. (Your / You're) going to do great on the test.
4. All of the students projects were displayed in the hallway.
5. I cant believe you finished the entire book in one night!

Part 3: Quote Quest

Dialogue needs quotation marks to show that someone is speaking. Rewrite these sentences with the correct punctuation, including quotation marks, commas, and end marks.

Example: She asked what time is it
Answer: She asked, "What time is it?"

1. Let's go to the library whispered Leo.
2. My teacher said Remember to study for the quiz.
3. I finished my homework exclaimed Sarah.
4. Do you want to come over after school asked Ben.

Part 4: Punctuation Power-Up (Challenge!)

Let's level up! Add either a semicolon (;) or a colon (:) to these sentences.

• Use a semicolon (;) to connect two closely related complete sentences.
• Use a colon (:) to introduce a list.

1. There are three things I need from the store milk, bread, and eggs.
2. The concert was amazing everyone was singing along.
3. My brother is great at sports he plays soccer, basketball, and baseball.
4. She studied for weeks for the final exam she was determined to get a good grade.

Answer Key

Part 1: The Comma Conundrum

1. My favorite video games are Minecraft, Roblox, and Fortnite.
2. I wanted to go to the park, but it started to rain.
3. Before you leave, please remember to pack your lunch, your water bottle, and your jacket.
4. Mia is a talented artist, and she plans to go to art school.
5. After the long and exciting movie, we all went out for pizza.

Part 2: Apostrophe Antics

1. It's a beautiful day outside.
2. The dog's tail wagged excitedly when it saw the treat.
3. You're going to do great on the test.
4. All of the students' projects were displayed in the hallway.
5. I can't believe you finished the entire book in one night!

Part 3: Quote Quest

1. "Let's go to the library," whispered Leo.
2. My teacher said, "Remember to study for the quiz."
3. "I finished my homework!" exclaimed Sarah.
4. "Do you want to come over after school?" asked Ben.

Part 4: Punctuation Power-Up (Challenge!)

1. There are three things I need from the store: milk, bread, and eggs.
2. The concert was amazing; everyone was singing along.
3. My brother is great at sports: he plays soccer, basketball, and baseball.
4. She studied for weeks for the final exam; she was determined to get a good grade.