In previous lessons we learned how to write fractions as percentages . Let's practise this concept by looking to the following example.
Express the fraction \dfrac{10}{25} as a percentage.
If our denominator is not 100, we can find an equivalent fraction with 100 as the denominator, and then express it as a percentage.
This video shows us how 10\% is 1 tenth, 25\% is 1 quarter and 50\% is 1 half and uses this to find 10\%,\,25\% and 50\% of values.
What is 50\% of 26?
When we need to find some common percentages, we can use these to help us:
Percent | Fraction | Division |
---|---|---|
10\% | \dfrac{1}{10} | \div 10 |
25\% | \dfrac{1}{4} | \div 4 |
50\% | \dfrac{1}{2} | \div 2 |
Now that you have seen how to find 10\% of an amount, this video shows you how you can find multiples of 10\% of an amount, such as 20\% ,\, 30\% or 80\%.
What is 30\% of \$40?
To find a percentage of a quantity that is a multiple of 10\%, e.g. 20\% ,\, 30\%,\,40\%, we can first find 10\% and then multiply the result.