An interactive way to learn and practice basic maths skills. This little book is packed with brain-bending puzzles, all based around numbers and how they work.

This book convenes a selection of 200 mathematical puzzles with original solutions, all celebrating the inquisitive and inspiring spirit of Nobuyuki “Nob” Y

If you love number-based puzzles, this book will challenge you and provide hours of entertainment. Number fill-ins are solved through logic and process of elimi

Readers can count on a good time with this book of numerical mysteries. They'll dig into clever number puzzles and gain confidence in their problem-solving skil

If you've got a knack for math, these puzzles will add up to a whole lot of fun. The five challenging tests each contain the same types of grids and shapes, so