Sideways Arithmetic from Wayside School(1989)

Louis Sachar

Why does elf + elf = fool? How many meals will Miss Mush, the lunch teacher, have to cook for the food to taste as bad as it smells? These Sideways Arithmetic problems may look puzzling at first, but you can use real maths to solve them, and the answers are perfectly logical. There are lots of clues and hints; plus, all the answers are in the back of the book. Best of all, all the kids you read about in Sideways Stories from Wayside School are here to help you! Try solving these, and more than fifty other maths brainteasers, along with the kids from Mrs. Jewls' class. You'll learn alot about maths but you'll be laughing too much to notice!