# Algebra 1 Companion Book, Vol 1 – Summer Edition

2.2.3 Percents – Practice

1.  Find 40% of 90.

2.  Find 85% of 30.

3.  Find 785% of 9. Round to the nearest hundredth if necessary.

4.  A survey at a children’s library showed that 42% of children chose mysteries as their favorite category of books. A total of 900 children took the survey. How many children chose mysteries?

5.  66 is 56% of what number? If necessary, round your answer to the nearest hundredth.

6.  45 is 1.5% of what number?

7.  What percent of 102 is 38? If necessary, round your answer to the nearest hundredth of a percent.

8.  What percent of 218 is 496? If necessary, round your answer to the nearest hundredth of a percent.

9.  A compound is made up of various elements totaling 60 ounces. If the total amount of copper in the compound weighs 16 ounces, what percent of the compound is made up of copper? If necessary, round your answer to the nearest hundredth of a percent.

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