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Data and Probability, #5
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Introduction
Even if students have not yet discussed percents, they have had experience with them and likely know some of the more common ones such as 100%, 50%, 25%, and 75%.
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We know that 100% is the whole amount and 50% is 
of it because 50 is half of 100. List some other fractions and percents that are equivalent.
Possible student responses
- 25% is half of 50%, and since half of is
, 25% must equal . 
of 100 is 75 so 75% is equal to .
of 100 is 10, so that would be 10%.
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