The Cambridge Mental Maths series has been carefully developed to cover mental maths activities throughout the year and could be an excellent tool on learners' desks to stimulate interest in this aspect of the subject. The series sets out to develop a variety of mental strategies to help learners become confident in mathematics. The activities in these Workbooks are designed to develop calculation and problem-solving strategies to empower learners to recall mathematical facts and concepts, enhance learners' confidence, knowledge, skills and understanding. The activities will give teachers the opportunity to: assess learners' existing knowledge and introduce new concepts.