If you were a plus sign
By: by Trisha Speed Shaskan ; illustrated by Francesca Carabelli.
Contributors: Carabelli, Francesca, ill.
Series: Math fun
Publisher: Picture Window Books
Published: 2009
Place of publication: Mankato, MN
Language: eng
ISBN-13: 9781404847842
Subjects: Mathematical notation -- Juvenile literature; Addition -- Juvenile literature
Genres: Juvenile literature.
Description: 24 p. : col. ill. ; 24 x 29 cm.750 Lexile.
Notes: Includes index.