Trust TeeJay's proven approach, which successfully develops mathematical skills and adds fun to learning. This book provides hundreds of practice questions, with progression and consolidation - the core TeeJay philosophy - underpinning every exercise and chapter. - Use Book 1A followed by Book 1B to cover the entire First Level curriculum - Chapter Zero revises all of the strands from Early Level - Every chapter ends with 'The 3Rs' exercise so that pupils can Revisit, Review and Revise that topic - Extension work provides extra stretch for high-attaining pupils - Answers for all questions are in the back of the book; answers for 'The 3Rs' are available on the TeeJay Maths website