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National 5 Biology Calculations

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Emma Tocher

on 1 August 2016

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Transcript of National 5 Biology Calculations

National 5 Biology Calculations
Ratio’s
Set the numbers next to each other - Make sure they are in the right order!

Find a number they are both divisible by and divide

Repeat until they can no longer be simplified
Percentages
Scientific Notation
Range
Percentage Change
Mean
X:Y
Example
The table below compared the rate of extinction of mammal species over two different time periods
What is the ratio of extinction between 1900-2000 compared to 1500-1900?
Answer
1900-2000 : 1500-1900
4.5 : 90
45 : 900
1 : 20
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