G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

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Year 7 Interactive Maths - Second Edition


Finding a Percentage of a Quantity

To find a certain percentage of a given quantity, we multiply it by the corresponding fraction.


Example 7

Find 20% of 45.

Solution:

20% of 45 = 9


Example 8

Find 3 1/2% of $80.

Solution:

3 1/2% of $80 = $2.80


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