Cross Number Puzzles (Challenging)

Cross Number Puzzles are an innovation of standard crossword puzzles with numerical calculations as clues instead of standard word clues. They are designed to challenge our numerical calculation skills, speed and accuracy of doing mathematical operations and smartness in selecting which clues to solve depending on previously filled boxes. These puzzles are a workout for the brain and a few minutes of these puzzles will provide a much needed exercise to your grey cells and boost your brain power. The mathematical operations used in these puzzles are: • Addition • Subtraction • Multiplication • Division • Exponents • Mod (Remainder) • Square roots and cube roots • Squares and cubes • Order of operations There are full solutions at the end of the book.