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Transparency 7

2. Splash Screen

3. Find the percent of a number
Objective
Find the percent of a number
Example 7-3b

4. Vocabulary
None
Example 7-3b

5. Example 1 Find the Percent of a Number
Lesson 7 Contents

6. Translate English to math Find 8% of 125. “find” translates to x = x = 
125
Bring down 8%
Answer:
“of” means multiplication
x = 10
Bring down the 125
Multiply by using calculator
NOTE: The % key is the “shift” the 2
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Example 7-1a

7. Find 6% of 150.
Answer: x = 9
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Example 7-1c

8. Translate English to math Find 125% of 64. “find” translates to x =
Bring down 125%
x =
125% 64
“of” means multiplication
Answer:
x = 80
Bring down the 64
Multiply using calculator
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Example 7-2a

9. Find 175% of 240.
Answer: x = 420
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Example 7-2c

10. Write a percent equation
LANGUAGES The graph to the right shows that 30% of the people in a community speak Spanish as their first language. If a community has 800 people, how many people can be expected to speak Spanish as their first language?
Find 30% of 800
Write a percent equation
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Example 7-3a

11. Translate English to math
Find 30% of 800
“find” translates to x =
Bring down 30%
x =
30%
 800 
“of” means multiplication
Bring down the 800
x = 240
Multiply using a calculator
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Example 7-3a

12. Add dimensional analysis x = 30%  800 
how many people can be expected to speak Spanish as their first language?
Find 30% of 800
Add dimensional analysis
x =
30%
 800 
Answer:
x = 240
people to speak Spanish
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Example 7-3a

13. Answer: x = 66 students consider baseball*
SPORTS The graph below shows that 22% of the students stated that baseball was their favorite sport. If the seventh grade class has 300 students, how many can be expected to consider baseball their favorite sport?
Answer: x = 66 students consider baseball
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Example 7-3b

14. Assignment
Lesson 10:7
Percent of a Number
All
End of Lesson 7