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Year 8 Percentages
Definitions and facts from the NSW Year 8 Percentages Topic
Term | Definition |
---|---|
To convert a fraction to a percentage. | multiply the fraction by 100 |
% is the symbol for | Percent |
Percentages are fractions measured out of ____ | 100 |
To convert a decimal to a percentage | multiply the decimal by 100 |
To convert a percentage to a decimal | divide the percentage by 100 |
To convert a percentage to a fraction | Change the % sign to a denominator of 100. Simplify the fraction if required. |
To express one quantity as a percentage of another | Write a fraction with the ‘part amount’ as the numerator and the ‘whole amount’ as the denominator. Convert the fraction to a percentage by multiplying by 100% |
To find a certain percentage of a quantity | Convert the required percentage to a decimal Change the ‘of’ to a multiplication sign. Multiply the decimal formed from the percentage by the amount |
The unitary method | involves finding the value of ‘one unit’, usually 1%, then using this information to answer the question. |
Profit | selling price – cost price |
Loss | cost price – selling price |