When making a list and when more than one adjective is modifying a noun
When you're addressing someone in particular
Addresses, dates and when separate two independent clauses with a coordinating conjunction
When separating out phrases that don't need to be there: nonessential

After introductory phrases and clauses and use in business correspondence
100
Sweet thoughtful Ms. Baden helps me with my English Math Science and History homework.
Sweet, thoughtful Ms. Baden helps me with my English, Math, Science(,)and History homework.
100

Hey you can you please be quiet?

Hey, you, can you please be quiet?

100

I live at 16110 Wildwood Lane New Lenox Illinois 60451.

I live at 16110 Wildwood Lane, New Lenox, Illinois, 60451.

100

Ms. Baden the world's greatest dancer is giving a huge comma test on Friday.

Ms. Baden, the world's greatest dancer, is giving a huge comma test on Friday.

100
Before we go out for lunch I would like to clean my room a little.
Before we go out for lunch, I would like to clean my room a little.
200
My cat is fat ugly and smelly.
My cat is fat, ugly(,) and smelly.
200

George I wish you would help me clean my room.

George, I wish you would help me clean my room.

200

My birthday is on January 30th 1986.

My birthday is on January 30th, 1986.

200
Insert commas where needed, if none are needed say Correct. The man with the dog is headed this way.
Correct
200
Dear Mr. James
Dear Mom,
300
Young sassy Maria likes to get her hair done talk on the phone and visit Chicago.
Young, sassy Maria likes to get her hair done, talk on the phone(,) and visit Chicago.
300

Bill I would love to go on a date with you.

Bill, I would love to go on a date with you.

300

Hint: FAN BOYS Insert word and comma. I walked the dog ________ then we went home.

I walked the dog, and then we went home.

300
Coach Ditka my dad will be given an award tonight.
Coach Ditka, my dad, will be given an award tonight.
300
Behind the dumpster I found an old couch that I could use in my living room.
Behind the dumpster, I found an old couch that I could use in my living room.
400
Handsome funny actors are the best in chick flicks.
Handsome, funny actors are the best in chick flicks.
400

Jim you can come to my party!

Jim, you can come to my party!

400

Hint: FAN BOYS Insert word and comma. I received an A on my test _______ my mom let me stay at my friend's house.

I received an A on my test, so my mom let me stay at my friend's house.

400
Insert commas where needed, if correct say correct. The governor of California who is a lover of movies will be in town next week.
The governor of California, who is a lover of movies, will be in town next week.
400
Sincerely Ms. Baden
Sincerely, Ms. Baden
500
The most exciting fun holidays are Christmas Easter and Halloween.
The most exciting, fun holidays are Christmas, Easter(,) and Halloween.
500

Tracy will you please teach me how to use a comma?

Tracy, will you please teach me how to use a comma?

500

I would love to hang out this weekend ______ I am grounded.

I would love to hang out this weekend, but I am grounded.

500
Mr. Reilly the craziest man I have ever met is going to be my teacher next year!
Mr. Reilly, the craziest man I have ever met, is going to be my teacher next year!
500
Between the wall and the bed I was able to hide some money for a rainy day.
Between the wall and the bed, I was able to hide some money for a rainy day.