Become an adding ace and a subtracting superhero with this fun-packed, fill-in book. * Get to grips with the basics * Learn useful techniques * Solve challenging puzzles * Answer baffling brainteasers * Discover tips and tricks Adding and subtracting has never been more fun! This book supports the key stage 1 (KS1) and key stage 2 (KS2) curriculum and is great for home learning. ABOUT THE SERIES: Brain Boosters is an engaging educational series, full of mind-boggling puzzles and activities which are designed to test the maths and logic skills of young readers.