According to the book's introduction, it was created as a response to Sideways Arithmetic after receiving complaints by students and teachers over the inclusion of the logic puzzles in the story.

In addition to the hints (partial solutions) and answers provided, More Sideways Arithmetic also includes "clues" (not present in Sideways Arithmetic), which aid the reader in solving the various logical puzzles.

In the first chapter, Allison invites Jason, Stephen and all the girls in class to her birthday party.

Later, Miss Worm, the teacher who teaches on the story just below Mrs. Jewls's, complains about the excitementic arithmetic is causing in the class.

The other students play along with the other days, in a variation of the unexpected hanging paradox until Mrs. Jewls tells them to forget the whole thing.