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Using Percents: Activity 2 of 3

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Arizona had a population of about 6.6 million in 2010. 4.9 million Arizonans are aged 18 years or over. In other words, 4.9 out of 6.6 million Arizonans are legally adults.

What percent of Arizonans are legally adults?

Divide the number of Arizonans who are legally adults by the total population of Arizona.

So,

To convert a decimal to a percent, move the decimal point 2 places to the right and add a percent sign.

So, 0.7424 becomes 74.24%.

We can round this down to say: About 74% of Arizonans are legally adults (18 years or over).

The total population of Arizona is about 6.6 million, and about 4.6 million Arizonans are 21 years old or over. What percent of Arizonans are 21 years or over? Round your answer to the nearest percent. (For example, 2.4% would round down to 2%, 2.5% would round up to 3%.)
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