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Wednesday, October 12, 2011

Gurpreet proportion post

Proportion


Task 1

Ratio: The relation between two similar numbers with respect to the number of times
the first contains the second.
Rate: A rate compares 2 quantities measured in 2 different units
Proportion: An equation which states that 2 ratios are equal.

Task 2
  1. 5 hours to travel 360 miles is about _____mph



2.As a playgroup worker, if I increase the amount of apple juice I am serving at the playgroup from 25 ml to 100 ml, how much should I increase the the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with







Task 3
What are the three ways you can prove that equivalent ratio statements are true?
3/4 = 12/16 or 4/9 = 16/32

One way to prove that this is true is when you cross- multiply, vertical and
horizontally they all have the same answer. Here is one of the ways to do it.




4/9=16/32 is false because if you do the same thing you get different numbers to divide it by so it is false. Here is a quote so you can better understand it" Whatever you do to the top you must do to the bottom".


Task 4
Here is a proportion video to help you cross-multiply

http://youtube/Uv_hPQfJE4g


Task 5

http://www.concurringopinions.com/wp-content/uploads/2011/10/CrimeInAmerica2.jpg

  1. Does this seem fair? To be it does not seem fair because the homeless guy only stole $100 and turned himself in and the other guy stole 3 billion
  2. With what you know about proportion look and read what is in the image above. Does it seem just and fair? Why have you made this choice?



      What would you have done if you were the judge?
      I would have given the homeless guy only 1 year or maybe even less because he confessed but the mortgage guy would about 30 years.











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