Maths GCSE cards 0.0 / 5 MathematicsImportant notesGCSEAQA Created by: Ola__Created on: 13-08-18 22:26 BODMAS The sequence of doing operations in a mathematic formula can be remembered by BODMAS : B - Brackets O - Other (example squaring or cubing or square root D - Division M - Multiplication A - Addition S - Subtraction Remember : Minus and Minus equals Plus Minus and Plus equals Minus Plus and Minus equals Minus Plus and Plus equals Plus 1 of 4 Calcultions using percentages Finding a percentage : Find X % of Y e.g. Find 15% of £46.00 Method a: convert the percentage you want into a fraction then multiply it by the amount you want the percentage from so 15/100 of £46.00 = 15/100 * 46 = £6.90 2 of 4 Lowest Common Multiple The smallest number that will divide by all the numbers in question e.g. the LCM of 3 and 5 multiples of 3 are - 3, 6, 9, 12, 15, 18, 21 multiples of 5 are - 5, 10, 15, 20, 21, 25, 30 The smallest number that 3 and 5 will both go into is 15. This is the LCM 3 of 4 Highest Common Factor The biggest number that will divide into all the numbers in question e.g. the HCF of 8 and 12 the factors of 8 are - 1, 2, 4, 8 the factors of 12 are - 1, 2, 3, 4, 6, 12 The highest number that will divide into both 8 and 12 is 4. This is the HCM 4 of 4

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