Maths 0.0 / 5 ? MathematicsYear 9 curriculum workGCSEAQA Created by: DGSYEAR9Created on: 03-02-19 09:48 How to go from fraction to percentage Use bus stop method or scale to 100 1 of 11 How to go from percenatge to decimal Divide by 100 2 of 11 Decimal to percentage Multiply by 100 3 of 11 What is the decimal multiplier for 17% For increase. Add on to 100% and divide by 100 = 1.17. For decrease, subtract from 100% and divide by 100= 0.83 4 of 11 How to do percentage increase/decrease Times with decimal multiplier 5 of 11 Find 25% of 300 Half of 300 = 150. Half of 150 = 75 6 of 11 How to calculate percentage profit Profit divided by original value x 100 7 of 11 How to calculate profit Revenue - cost 8 of 11 Simple interest The same percentage of the original amount is paid each year 9 of 11 Compound interest The interest earned is added on each year. E.g. 1000 x 1.07 to the power of 3 = £1225 10 of 11 Deprecation problem 3000 x 0.85 to the power of 4... 11 of 11

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