Understanding Maths is a series of topic-based study books for children in Key Stage 2, providing rigorous practice of key subject areas. Each topic contains a concise summary of the information required by the National Curriculum, making the series ideal for use as preparation for the Key Stage 2 tests. Each book is a stand-alone resource, so children can either work through them in order or focus on individual aspects of the subject. Together, the nine books support the whole of the Key Stage 2 maths curriculum, providing a solid foundation for success in maths. Decimals & Percentages meets the National Curriculum requirements for Key Stage 2 maths, and covers the following areas: ordering, rounding and comparing decimals, adding and subtracting decimals, finding percentages mentally, and with a calculator, estimation, problem solving, and converting fractions to decimals and percentages. This book develops a strong understanding of decimals and percentages and how they relate to fractions and whole numbers. Key features of Understanding Maths include: an 'Explanation' to introduce each topic; activities to consolidate and revise knowledge and skills; thought-provoking facts to foster a love of learning beyond the National Curriculum; regular 'Progress tests' and a 'Final test' to track children's development.