n nThis brand-new book in the Clever Kids(R) series contains over 100 quick-fire number puzzles to exercise young minds. n n From number chains and simple calculations to target sums and times-table pyramids, its packed with activities designed to test math skills in 10 minutes or less. Written by bestselling puzzle book author Gareth Moore, this book is guaranteed to keep childrens brains busy and provide hours of fun as they try to beat the clock.n