GCSE Edexcel Mathematics Higher LevelArithetic Calculations Order of operations Negative numbers Adding and subtracting negative numbers Multipying and dividing negative numbers Decimals Adding and subtracting decimals Multipying decimals Dividing decimals Multiples and factors Mupltiple Factors Prime numbers ty ty ty ty iples and factors I ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty ty tyno