Capitalization worksheet for 3rd Grade (punctuation) - Your Home - Free Printable

Let's solve this capitalization and punctuation worksheet step by step. The goal is to:

1. Circle the first letter of words that need to be capitalized.
2. Add appropriate punctuation (like periods, question marks, etc.).

We’ll go through each sentence one by one.

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1. my dog coco has a cousin his name is prince

- "my" → starts sentence → M
- "coco" → proper noun (dog's name) → C
- "has" → no capital needed
- "a cousin" → no capital
- "his name is prince" → "prince" is a dog’s name → P
- Add period at the end.

✔ Corrected:
My dog Coco has a cousin. His name is Prince.

> *Note: Two sentences here — "His name is Prince" should be separate.*

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2. prince and coco love to run jump and play

- "prince" → proper noun → P
- "coco" → proper noun → C
- "love" → not capitalized unless start of sentence
- "run jump and play" → list of actions → add commas between
- Add period at the end

✔ Corrected:
Prince and Coco love to run, jump, and play.

> *Commas in a list; “and” before last item.*

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3. what is the most fun thing you can do with a puppy

- "what" → starts sentence → W
- Question → add ? at the end

✔ Corrected:
What is the most fun thing you can do with a puppy?

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4. my puppys bone is really big when compared to his body

- "my" → start of sentence → M
- "puppys" → typo? Should be puppy's (possessive)
- "bone" → no capital
- "is", "really", etc. → no capital
- Add period at the end

✔ Corrected:
My puppy's bone is really big when compared to his body.

> *Note: "puppy's" is possessive — apostrophe + s.*

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5. today is thursday may 28 2020

- "today" → start of sentence → T
- "thursday" → day of week → Thursday
- "may" → month → May
- "28" → date → keep as is
- "2020" → year → keep
- Add period at the end

✔ Corrected:
Today is Thursday, May 28, 2020.

> *Comma after day and month in dates.*

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6. my sister amber loves to do math

- "my" → start of sentence → M
- "amber" → person's name → Amber
- "loves", "to", "do", "math" → no capital
- Add period at the end

✔ Corrected:
My sister Amber loves to do math.

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7. my mom michelle works in leesburg florida

- "my" → M
- "michelle" → person's name → Michelle
- "leesburg" → city name → Leesburg
- "florida" → state name → Florida
- Add period at the end

✔ Corrected:
My mom Michelle works in Leesburg, Florida.

> *Comma between city and state.*

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8. my dad steven works at disney

- "my" → M
- "steven" → person's name → Steven
- "works", "at" → no capital
- "disney" → company name → Disney
- Add period at the end

✔ Corrected:
My dad Steven works at Disney.

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9. do you think that a temperature of 100 degrees is hot

- "do" → start of sentence → D
- Question → add ? at the end
- "temperature", "degrees" → no capital
- "hot" → no capital

✔ Corrected:
Do you think that a temperature of 100 degrees is hot?

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10. grandpa lives in rochester new york

- "grandpa" → start of sentence → Grandpa
- "rochester" → city → Rochester
- "new york" → state → New York
- Add period at the end

✔ Corrected:
Grandpa lives in Rochester, New York.

> *Comma between city and state.*

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✔ Final Answers (with corrections):

1. My dog Coco has a cousin. His name is Prince.
2. Prince and Coco love to run, jump, and play.
3. What is the most fun thing you can do with a puppy?
4. My puppy's bone is really big when compared to his body.
5. Today is Thursday, May 28, 2020.
6. My sister Amber loves to do math.
7. My mom Michelle works in Leesburg, Florida.
8. My dad Steven works at Disney.
9. Do you think that a temperature of 100 degrees is hot?
10. Grandpa lives in Rochester, New York.

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🔍 Key Rules Used:

- Capitalize the first word of a sentence
- Proper nouns: names of people, pets, places, companies, days, months
- Possessive form: use apostrophe (e.g., puppy's)
- Punctuation:
- Periods for statements
- Question marks for questions
- Commas in lists and between city/state
- Dates: Day of week, Month, Date, Year → all capitalized

Let me know if you'd like a printable version or explanation for any specific rule!