1. Splash Screen

2. Five-Minute Check (over Lesson 7–1) Then/Now
Key Concept: Percents and Decimals
Example 1: Percents as Decimals
Example 2: Percents Less than 1 or Greater than 100
Example 3: Decimals as Percents
Example 4: Fractions as Percents
Example 5: Real-World Example: Compare Numbers
Concept Summary: Common Equivalents
Lesson Menu

3. A. 30% B. C.
D. 22%
5-Minute Check 1

4. A. 17%
B. 7%
C. 0.7%
D %
5-Minute Check 2

5. Write 32% as a fraction in simplest form.B. C. D.
5-Minute Check 3

6. Write 6% as a fraction in simplest form.B. C. D.
5-Minute Check 4

7. A. 38% B.
C. 0.35
D. 1 out of 3
5-Minute Check 5

8. Which of the following represents the shaded portion of the figure?
B. 40%
C. 45%
D. 60%
5-Minute Check 6

9. Express percents as decimals and decimals as percents.
You have already expressed fractions as percents and percents as fractions. (Lesson 7–1)
Express percents as decimals and decimals as percents.
Compare and order fractions, decimals, and percents.
Then/Now

10. Concept A

11. 23% = .23 Remove the % symbol and divide by 100.
Percents as Decimals
A. Write 23% as a decimal.
23% = .23 Remove the % symbol and divide by 100.
Add a zero in the ones place.
= 0.23
Answer: 0.23
Example 1A

12. 4% = .04 Remove the % symbol and divide by 100.
Percents as Decimals
B. Write 4% as a decimal.
4% = .04 Remove the % symbol and divide by 100.
Add a zero in the ones place.
= 0.04
Answer: 0.04
Example 1B

13. A. Write 45% as a decimal. A. 0.0045 B. 0.045 C. 0.45 D. 4.50
Example 1A

14. B. Write 5% as a decimal. A
B. 0.05
C. 0.50
D. 5.00
Example 1B

15. 0.7% = .007 Remove the % symbol and divide by 100.
Percents Less than 1 or Greater than 100
A. Write 0.7% as a decimal.
0.7% = .007 Remove the % symbol and divide by 100.
Add a zero in the ones place.
= 0.007
Answer: 0.007
Example 2A

16. 291% = 2.91 Remove the % symbol and divide by 100.
Percents Less than 1 or Greater than 100
B. Write 291% as a decimal.
291% = 2.91 Remove the % symbol and divide by 100.
Answer: 2.91
Example 2B

17. A. Write 0.4% as a decimal. A
B. 0.04
C. 0.4
D. 4.0
Example 2A

18. B. Write 328% as a decimal. A. 0.0328 B. 0.328 C. 3.28 D. 32.8
Example 2B

19. 0.6 = 0.60 Multiply by 100. Add a placeholder zero.
Decimals as Percents
A. Write 0.6 as a percent.
0.6 = 0.60 Multiply by 100. Add a placeholder zero.
= 60% Add the % symbol.
Answer: 60%
Example 3A

20. B. Write 5.71 as a percent. 5.71 = 5.71 Multiply by 100.
Decimals as Percents
B. Write 5.71 as a percent.
5.71 = 5.71 Multiply by 100.
= 571% Add the % symbol.
Answer: 571%
Example 3B

21. C. Write 0.008 as a percent. 0.008 = 0.008 Multiply by 100.
Decimals as Percents
C. Write as a percent.
0.008 = Multiply by 100.
= 0.8% Add the % symbol.
Answer: 0.8%
Example 3C

22. A. Write 0.7 as a percent.
A %
B. 0.07%
C. 7%
D. 70%
Example 3A

23. B. Write 4.93 as a percent. A. 0.493% B. 4.93% C. 49.3% D. 493%
Example 3B

24. C. Write as a percent.
A. 0.09%
B. 0.9%
C. 9%
D. 90%
Example 3C

25. Fractions as Percents A.
= 37.5%
Answer: 37.5%
Example 4A

26. Fractions as Percents B.
= …
≈ 88.9%
Answer: 88.9%
Example 4B

27. Fractions as Percents C.
≈ 213.3%
Answer: %
Example 4C

28. Fractions as Percents D.
= 0.8%
Answer: 0.8%
Example 4D

29. A. Express as a percent. Round to the nearest tenth, if necessary.
B. 78.0%
C. 87.5%
D. 93.5%
Example 4A

30. B. Express as a percent. Round to the nearest tenth, if necessary.
Example 4B

31. C. Express as a percent. Round to the nearest tenth, if necessary.
B. 37.8%
C %
D %
Example 4C

32. D. Express as a percent.
A %
B. 0.78%
C. 87.5%
D. 78%
Example 4D

33. and 0.35 as percents. Then compare with 25%.
Compare Numbers
BAKERY A baker said that 25% of his customers buy only bread, of his customers buy only cookies, and 0.35 buy only pies. Which of these groups is largest?
and 0.35 as percents. Then compare with 25%.
0.35 = 35%
Answer: Since 40% > 35%, and 40% > 25%, the group that buys only cookies is largest.
Example 5

34. C. the groups are equal in size D. cannot be determined
A. vocal music
B. instrumental music
C. the groups are equal in size
D. cannot be determined
Example 5

35. Concept B

36. End of the Lesson