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Sideways arithmetic fro wayside school, more than 50
Sideways arithmetic fro wayside school more than 50 Author:Sachar, Louis "Welcome to math class at Wayside School. Why does elf plus 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 math to solve them..."