Ladybird Addition & Subtraction is an entertaining & engaging way for children to learn & practise their basic maths skills, while having some fun along the way! This creative & interactive book is designed to help 4-7 year olds develop basic mathematic skills working with numbers up to 20. With games & repeatable exercises this book introduces children to number bonds & will teach them that with Maths, the possibilities are endless! Product Information: •†ISBN: 9780241727126 •†Author: Rachel Riley •†Publisher: Ladybird •†Format:† Paperback •†Pages:†32 •†Dimensions: 29.8 x 0.4 x 21.2 cm