1. 0-6 Percents Goals: Use equations to solve percent problems.
Use percents to solve real-life problems.

2. Vocabulary
Percent – a ratio that compares a number to 100

3. Percent to Fraction Put it over 100 and reduce!!! Examples: 50% 38%
12%

4. Percent to Decimal Move the decimal point 2 places to the left!!!
Examples:
42% 8%
125%

5. Solving percent problems
Translate words into a math equation:
“is” means = (equals)
“of” means ‧ (multiply)
“what” means x (variable)
Solve the equation using multiplication or division.

6. 26% OF WHAT NUMBER IS 130
26% of what number is x = x = 500 x =
130
0.26 ‧

7. Examples What is 30% of 70? 14 is 25% of what number?
27 is what percent of 135?
26 is 40% of what number?
48 is what percent of 160?
What is 150% of 200? 21 56
20% 65
30%
300

8. Practice
Worksheet – “0-6 Percents”

9. Word Problem #1
There are about 170,000 species of butterflies and moths worldwide. Butterflies and moths make up about 17% of all insect species. Estimate the number of insect species.
17% of something = 170,000
0.17x = 170,000
x = 1,000,000 insect species

10. Word Problem #2
You read in a magazine that an affordable rent is one that is no more than 30% of your salary. The apartment you want to rent is $625 per month. What must be your salary to afford this apartment?
30% of something = 625
0.30x = 625
x = $

11. Word Problem #3
The graph shows the amount of time a teenager spends on different activities in a 24 hour period.
How much time is spent sleeping?
7.58 hours
How much time is spent watching TV?
2.28 hours
How much time is spent doing homework?
1.90 hours

12. Word Problem #4
150 people were asked to identify their favorite season. The results are shown in the graph below.
What percent of people said Fall?
21%
What percent of people said Summer?
35%
What percent of people said Spring?
25%

13. Homework
Pages P21-P22 #10-22 even
#24-28 all