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ssb coaching Best Coaching academy for RMS- Sainik School Entrane Exam Preparation - www.sainikrimc.com defence-career.blogspot.com Basic math formulas WRITE AND MEMORIZE ALL THE BASIC FORMULA PRACTICE MATHS EVERY DAY Find here a comprehensive list of basic math formulas commonly used when doing basic math computation Average formula: Let a 1 ,a 2 ,a 3 ,......,a n be a set of numbers, average = (a 1 + a 2 + a 3 ,+......+ a n )/n Fractions formulas: Converting an improper fraction to a mixed number: Formula for a proportion: In a proportion, the product of the extremes (ad) equal the product of the means(bc), Thus, ad = bc Percent: Percent to fraction: x% = x/100 Percentage formula: Rate/100 = Percentage/base Rate: The percent. Base: The amount you are taking the percent of. Percentage: The answer obtained by multiplying the base by the rate Consumer math formulas: Discount = list pri