A good understanding of theNumber and Ratio parts of the GCSE(9-1)/IGCSEsyllabus is key to getting a good grade in theseexams, as these subjects together form a significant portion of the syllabus. Unfortunately some students struggle, as although some might consider these subjects simple from a mathematical point of view, there not always easy to understand. Hopefully after taking this course you wont be one of them...This course will teach you how to:Find the Highest Common Factor(HCF) and Lowest Common Multiple(LCM) of two numbersEstimate answers to problemsExpress numbers to a certain number of Decimal places or Significant FiguresThe formula for Compound Growth or Decay and how to apply itKnow how to work with numbers in Standard FormTackle GCSE/IGCSElevel exam problems in Ratios and ProportionThis course is a follow up to my courseIntroduction to Number for GCSE(9-1)/IGCSE Mathematics.