"...cartoon energy and amusing visual asides, this story does for numbers what Laurie Keller did for states..." --Booklist

"This tale not only reinforces mathematical principles, but also has a great message about friendship and personal feelings. It can be read aloud, alone, or performed as reader's theater." --School Library Journal

"Read this aloud to whet the new reader's appetite, but there is just so much to see that only a slow reading, with a magnifying glass in hand, will do." --Horn Book Magazine

"...features walking, talking written characters (digits, in this case, rather than letters), accompanied by Lichtenheld's snappy, cartoon-style art." --Publishers Weekly

"A hero and some villains and good winning over evil (oh, and all that educational stuff, too), all wrapped in humor and tied with a comic bow--what could be better?" --Kirkus Reviews