1. Lesson 4-3 Solve proportion problems by using the percent equations
Where is this useful??? SHOPPING!!!
This is definitely one of those “life skills” days!!!

2. PERCENTS & DECIMALS REVIEW
Percent (%) means per hundred.
To change a decimal to a percent
Multiply the decimal by 100
Write a percent sign after it
Multiply the decimal by 100 (move the decimal point 2 places to the right)
Write a percent sign after it

3. To change a percent to a decimal
Divide the percent by 100
Omit the percent sign
Divide the percent by 100 (move decimal 2 places to the left)
Omit the percent sign

4. PERCENTS AND DECIMALS REVIEW
Convert the following decimals to percents: E
44.5% A
15%
1.5% F
11.11% B
0.5%
62.5% G C
104.2% H
D. 0.9
90%

5. PERCENTS AND DECIMALS REVIEW
Convert the following percents to decimals:
E. 1.5%
0.015
A %
0.2345
0.25
F. 35%
0.35
B. 25%
0.125
G %
C %
3.1
H. 310%
D. 45%
0.45

6. The percent equation is % =
100 of

7. Figuring out what goes where?is % =
100 of
What number is 15% of 10?
What percent of 60 is 3?
P = 15
10 = 100
3 = r
60 = 100
10 * 15 = 100P
P = 1.5
3 * 100 = 60r
r = 5%

8. Figuring out what goes where?is % =
100 of
What is 0.48% of 250?
640 is what percent of 32?
P =
= 100
= r
32 = 100
250 * 0.48= 100P
P = 1.2
640 * 100 = 32r
r = 2000%

9. Figuring out what goes where?is % =
100 of
What percent of 170 is 68?
11% of 521 is what number?
68 = r
= 100
P = 11
= 100
68 * 100 = 170r
r = 40%
100P = 521 * 11
P = 57.31