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Wednesday, October 12, 2011

Terence's Proportion Post


Ratio- Relation between 2 similar magnitudes (5:20)
Rate- Amount of charge or payment (5hours/day)
Proportion- Relations between size, quantities, and numbers

1. 5 hours to travel 360 miles is about 72 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.

3. What are the three ways you can prove that equivalent ratio statements are true?
3/4 = 12/16 or 4/9 = 16/32 You can cross multiply. 3/4=12/16 is true because 3 times 16 is 48 and 4 times 16 is 48.


http://youtu.be/Uv_hPQfJE4g

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