'Maths- No Problem! Level 2 Addition and Subtraction, Ages 5-7 (Key Stage 1)'. Each book in this unique series offers total coverage of all the essential skills for children in the first stages of their maths journey. Each topic is supported by clear examples and helpful hints to encourage proficiency. This full-colour book will help your child learn to develop their knowledge of simple adding and subtracting using a range of different methods.