7th Grade Math

340 Percent

= Step-by-Step Solutions begin on page R1.

Extra Practice begins on page EP2.

Write an equation for each problem. Then solve. Round to the nearest tenth

if necessary.

Examples 1–3

8. What number is 65% of 98? 9. Find 39% of 65.


9. Find 24% of 25. 11. What number is 53% of 470?


10. 9 is what percent of 45? 13. What percent of 96 is 26?


11. What percent of 392 is 98? 15. 30 is what percent of 64?


12. 33% of what number is 1.45? 17. 84 is 75% of what number?


13. 17 is 40% of what number? 19. 80% of what number is 64?

Example 4 20. BOOKS Ruben bought 6 new books for his collection. This increased his

collection by 12%. How many books did he have before his purchases?

21. VIDEO GAMES A store sold 550 video games during the month of
    December. If this made up 12.5% of their yearly video game sales, about
    how many video games did the store sell all year?


22. MEASUREMENT The length of Giselle’s arm is 27 inches. The length of
    her lower arm is 17 inches. About what percent of Giselle’s arm is her
    lower arm?


23. LOBSTERS Approximately 0.02% of North Atlantic lobsters are born
    bright blue in color. Out of 5,000 North Atlantic lobsters, how many
    would you expect to be blue in color?

Write an equation for each problem. Then solve. Round to the nearest

tenth if necessary.

B

24. Find 135% of 64. 25. What number is 0.4% of 82.1?


25. 450 is 75.2% of what number? 27. What percent of 200 is 230?


26. SALARY Suppose you earn $6 per hour at your part-time job. What will
    your new hourly rate be after a 2.5% raise?

2929 ONLINE VIDEOS About

142 million people in the

United States watch online

videos. Use the graph that

shows what type of videos

they watch.

a. About what percent of

viewers watch comedy,

jokes, and bloopers?

b. About what percent watch

news stories?

c. What percent of the viewers

watch music videos and

movie previews?

File EditView HistoryBookmarksWindowHelp Mon 12 9:14 AM

x

Online Video Viewers

Movie previews

News stories

Clips on video-sharing sites

Music videos

Comedy, jokes, bloopers

39.76

44.02

46.86

51.12

52.54

0203040506010

Millions of Viewers

331_341_C06_L2_895130.indd 340 12/30/09 4:05 PM