I am looking for series books for a 9-10 year old reading level 4-5 grade girls. Does anyone havw any ideas please let me know thanks you.

I have seven of them onmy shelf. Willing to make a deal  P.M me if interested

Mandie series by Lois Gladys Leppard

i thought of others you could look for

American Girl series

Grandma's Attic series

Boxcar Children series

My daughter is looking forward to reading the following books this summer...

Little House on The Prairie

Anne of Green Gables

Judy Bloom series

Ramona series

My ten yr old is working on:

Chronicals of Narnia

My eleven yr is reading:

Dear Dumb Diary

These are very entertaining and just right for the ages, I believe my girls will be done before you know it and then off again we search.

I have other good chapter books that are not series if you would like to see my bookshelf, I will be posting new books withing the next two weeks.

Fairy Realm Series by Emily Rodda

Rowan of Rin Series by Emily Rodda

Dragons of Deltora by Emily Rodda

The Indian in the Cupboard Series by Lynne Reid Banks

My DD, age 11 has loved Nancy Drew, Clue books (they have the same characters as the game), Girls to the Rescue, the Lily and Sophie series by Nancy Rue to name a few.  She also likes the New Mary-Kate and Ashley Mysteries.  If I think of more...I will let you know. 

I read Hardy Boys and Nancy Drew...loved both of them!

My dd (10) loves the Disney Fairy series

At that age, my daughter was reading Nancy Drew, The Babysitters Club, and the Encyclopedia Brown series.  She nearly had them all, so I'm guessing she liked them!

what about the Sisters Grimm series? 

My daughters love Little House on the praire series, as well as Junie B. Jones.

As a child I ADORED LM Montgomery's Emily Books - there are three in the series.  The main character, Emily, is also an orphan, though we meet her father in the beginning, and she is more imaginative and creative even than Anne - She likes to write, and is just a truly enjoyable character.  I think she especially appealed to me as a child because I had some trouble fitting in at times, and Emily goes through many of the same struggles.  I would highly highly recommend it!

I've ordered a couple from the Mermaid SOS series. It looks really cute, I'm going to read them to DD.

Depending on the reading level.

I read the first two books to my daughter a year or so ago..., but she has decided to reread them.

She reads pretty close to grade level maybe slightly above and they are challenging to her actually. I think partly because of the print size in the books she bought. She's 10 going into 5th grade.

Anyway she bought all three to read this summer.

I have been looking for Pippi Longstockings for her I think she would love them.

The other recommendations are right on target, dd read the Little House Series this winter, followed by a couple of the Caroline Years books, she is planning to finish that series this summer after Mary Poppins, and their teacher read them one of the Beverly Cleary Fudge books. Depending on the girls maturity I would think twice about Judy Blume. It was one of my favorite books at 5th or 6th grade..., but not sure dd is there yet , maybe next summer.

I loved The Babysitter's Club and The Boxcar Children.

I also enjoyed (and amy now swaping):

The Princess series (books 1 and 3)  by Gabrielle Charbonnet. These books are a modern take on "The Little Princess"

And for horse/animal lover, The Thoroughbred Series. I have Ashleigh's Christmas Miracle (Thoroughbred Super) :: Joanna Campbell

There's a book called The Birchbark House (Erdrich) which is wonderful and at the perfect age and reading level range.  Also, that is a good age to think about Island of the Blue Dolphins by Scott O'Dell.  Now that I think about it, there is a wonderful scandanavian book called The Crow Girl by Bredsdorff that may be worth a shot too.  It is about an orphaned girl and her journey of finding where she belongs (I really love this book and so do my little sisters).

I have a 9 and 11 year old they love lots of series:

Secret of Droom

animal ark

who was Ben franklin( or just about anyone famous)

magic attic( is a little lower reading level but they both love them)

don't forget the short stories for american girls or the worlds

wishbone

great illustrated classics

I loved all of Marguerite Henry's horse books at that age (Misty of Chincoteague, Stormy Misty's Foal, etc.) And these have already been mentioned but I also liked the Little House on the Prarie series, The Chronicles of Narnia, The Babysitter's Club books, Nancy Drew and Trixie Belden, and Madeline L'Engle's books. Such great memories... :D

I was going to say Nancy Drew but so many other people have said it.

Still I have one on my shelf and just thought I would let you know just in case you were interested.

Well, I am just reinforcing mainly:

Emily Rodda series (several)

Banks' Indian series

All-of-a-Kind Family

Book of 3 series (Black Cauldron)

Montgomery's Emily of New Moon, Anne, and a 3rd series which I forget

Wishbone

Animal Ark

Magic treehouse

Great Illustrated Classics

Nancy Drew and Hardy Boys

Pollyanna (maybe 12)

Little Colonel

Animorphs

Note both my boys love(d) all theses series as well

Judy Moody is a good one as well.

 A favorite for me was Socks by Beverly Cleary, and another is called The Search for Snout, which is the second in Bruce Coville's "Alien Adventures".  Others I liked included the Babysitters Club, Wishbone, and the Ramona books.