4th Grade Logic Puzzles: Calcudoku Puzzles - Best Logic Puzzle Collection for Kids

Download or read book 4th Grade Logic Puzzles: Calcudoku Puzzles - Best Logic Puzzle Collection for Kids written by Ted Warner and published by Logic Puzzles for Kids. This book was released on 2018-05-11 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: CalcuDoku is a mathematical and logical puzzle loosely similar to Sudoku. It was invented by a Japanese mathematics teacher Tetsuya Miyamoto. The objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that: - Each row contains exactly one of each digit. - Each column contains exactly one of each digit. - Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division (÷). - Unlike Killer Sudoku, digits may repeat within a block.