RATIO:

What are they? And how do we use them?


Jorge thinking about ratios
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The purpose of ratios is to compare things, the amount of things. Watch this video for a more detailed description.


A Classroom in a School
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Ratios can be written in three ways:

apples to oranges

apples:oranges

                                apples                                           oranges

 

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Classroom ratio of girls to boys

This photo is an example of a part-to-part ratio.  

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Another type of ratio is called part-to-whole.  


Basketballs to total balls
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Red Blue dots

There are 6 blue circles and 5 red circles. What is the ratio of red circles to blue circles? 

 

 

5:6 read 5 to 6.  

 

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So let's revist our original question: What is a ratio? 

 

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