PERCENTAGES 1. Percentage means parts of 100. To change a fraction or decimal to a percentage, multiply by 100. Example Write abas percentages. a b.

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Presentation transcript:

PERCENTAGES 1

Percentage means parts of 100.

To change a fraction or decimal to a percentage, multiply by 100. Example Write abas percentages. a b

To change a percentage to a fraction or a decimal, divide by 100. Example Write a 52% as a fractionb 16.5% as a decimal. a b

This diagram might help you to remember how to convert between decimals, fractions and percentages. decimal or fraction percentage × 100 ÷ 100

6.25% of all sales COMMISSION FOR SALESMEN: Examples 1 Raju sells computers. Last year he sold computers worth $ How much commission did he earn?

15% ALL WAGES TO BE INCREASED BY Examples 2 What would be the new wage of someone who presently earns $650 a week? Quicker method:

24% off SALE all marked prices now Examples 3 The marked price on a calculator is $ Calculate the sale price of the calculator. Quicker method:

4% cash discount CARS FOR SALE! Examples 4 A car is priced at $5995. Helen pays cash for the car and receives a 4% cash discount. How much does she pay? Quicker method: