1. Convert between fractions, decimals and percents.

2. Write the ratio of red balloons to yellow balloons
Write a ratio in simplest form.
6 red balloons and 6 yellow balloons were used for a party.
Write the ratio of red balloons to yellow balloons
Write the ratio of red balloons to all balloons
Write the ratio of yellow balloons to all balloons
Solve the proportion:

3. Percent:
Per cent => Per 100
Out of 100
100
A fraction with a denominator of 100.

4. Write % as Fractions & Decimals
To write a percent as a decimal,
Divide it by 100
92%
To write a percent as a fraction,
Put it over 100
92 Abc 100

5. Change a Fraction to a % Top Bottom
Make it 2 digits after the decimal point
0.60
60%

6. Exit Problems Write 15% as a fraction Write 15% as a decimal.
Write 0.81 as a percent.
Write as a percent.

7. Fractions, Decimals and Percents
Lesson 12
Proportionality
Fractions, Decimals and Percents

8. Communication Prompt Which do you prefer when writing a fraction as a
percent:
-rewriting the fraction with 100 in the denominator OR
-writing the fraction as a decimal and multiplying the
decimal by 100? Why?

9. Example 3a Write the fraction as a percent.
Method 1: Rewrite as fraction
Write the percent %
Method 2: Multiply decimal by 100.
Convert to a decimal.
Multiply by ·100 = 70
Write with % symbol %

10. Example 2c Write each decimal as a percent. c. 1.44
Method 1: Rewrite as a fraction
Method 2: Multiply by ·100 = 144%

11. Example 1 Write each percent as a fraction and a decimal. a. 25%
Convert to a fraction and simplify.
Convert to a decimal ÷ 4 = 0.25
25% = = 0.25
b. 88%
Convert to a decimal ÷ 25 = 0.88
88% = = 0.88

12. Example 2ab Write each decimal as a percent. a. 0.65
Method 1: Rewrite as a fraction
Method 2: Multiply by ·100 = 65%
b. 0.5
Method 1: Rewrite as a fraction
Method 2: Multiply by ·100 = 50%

13. Example 3b Write the fraction as a percent.
Method 1: Rewrite as fraction
Write the percent %
Method 2: Multiply decimal by 100.
Convert to a decimal.
Multiply by ·100 = 40
Write with % symbol %

14. Example 3c Write the fraction as a percent.
Method 1: Rewrite as fraction
3 does not divide evenly into use Method 2
Method 2: Multiply decimal by 100.
Convert to a decimal.
Multiply by 100.
Write with % symbol.