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ratioOpt

# ratioOpt - DONOW(notlater 100s of free ppts from...

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DO NOW (not later): Compare the number of boys to girls in the class. 100’s of free ppt’s from www.pptpoint.com library

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The number of boys = The number of girls = If we compare boys to girls we get ___ boys to _____ girls.
What do we call a comparison between  two or more quantities? RATIO We  jus t fo und the   RATIO  o f bo ys  to   g irls . Is  the  ratio  o f  girls to boys   the  s am e  ? No, when writing a ratio, ORDER matters.

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AIM: What is a ratio?
It’s Friday night and your friends are  having a party……   The ratio of girls to guys is 2 to 12. Would you want to attend the party?

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How many basketballs to footballs are  there? For every 4 basketballs there are 6  footballs. The  ratio  is 4 to 6.
What are some other ways we can write the ratio of basketball to footballs? 4 to 6 4 : 6 4 6 First quantity to Second quantity First quantity : Second quantity First quantity divided by the second quantity (as a fraction ). Every ratio can be written in 3 ways: Careful!! Order matters in a ratio.

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ratioOpt - DONOW(notlater 100s of free ppts from...

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